/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_unroll-cond-5.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:16:25,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:16:25,849 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:16:25,858 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:16:25,858 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:16:25,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:16:25,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:16:25,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:16:25,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:16:25,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:16:25,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:16:25,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:16:25,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:16:25,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:16:25,896 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:16:25,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:16:25,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:16:25,896 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:16:25,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:16:25,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:16:25,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:16:25,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:16:25,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:16:25,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:16:25,899 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:16:25,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:16:25,899 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:16:25,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:16:25,900 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:16:25,900 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:16:25,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:16:25,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:16:25,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:16:25,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:16:25,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:16:25,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:16:25,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:16:25,902 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:16:25,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:16:25,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:16:25,903 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:16:25,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 21:16:26,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:16:26,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:16:26,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:16:26,121 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:16:26,121 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:16:26,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_unroll-cond-5.wvr_bound2.c [2023-08-03 21:16:27,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:16:27,413 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:16:27,414 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_unroll-cond-5.wvr_bound2.c [2023-08-03 21:16:27,420 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea4868c8/438061417a1f424e9d1f077a7a54d337/FLAG1cca0699a [2023-08-03 21:16:27,433 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea4868c8/438061417a1f424e9d1f077a7a54d337 [2023-08-03 21:16:27,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:16:27,436 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:16:27,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:16:27,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:16:27,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:16:27,441 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465b05f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27, skipping insertion in model container [2023-08-03 21:16:27,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,464 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:16:27,609 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_unroll-cond-5.wvr_bound2.c[3137,3150] [2023-08-03 21:16:27,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:16:27,622 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:16:27,644 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_unroll-cond-5.wvr_bound2.c[3137,3150] [2023-08-03 21:16:27,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:16:27,660 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:16:27,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27 WrapperNode [2023-08-03 21:16:27,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:16:27,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:16:27,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:16:27,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:16:27,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,701 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 239 [2023-08-03 21:16:27,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:16:27,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:16:27,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:16:27,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:16:27,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,753 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:16:27,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:16:27,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:16:27,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:16:27,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (1/1) ... [2023-08-03 21:16:27,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:16:27,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:16:27,790 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 21:16:27,798 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 21:16:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:16:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 21:16:27,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 21:16:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 21:16:27,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 21:16:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:16:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:16:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:16:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 21:16:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:16:27,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:16:27,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:16:27,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:16:27,827 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 21:16:27,910 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:16:27,912 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:16:28,247 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:16:28,260 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:16:28,260 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-03 21:16:28,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:16:28 BoogieIcfgContainer [2023-08-03 21:16:28,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:16:28,264 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:16:28,265 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:16:28,267 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:16:28,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:16:27" (1/3) ... [2023-08-03 21:16:28,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e9bd5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:16:28, skipping insertion in model container [2023-08-03 21:16:28,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:16:27" (2/3) ... [2023-08-03 21:16:28,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e9bd5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:16:28, skipping insertion in model container [2023-08-03 21:16:28,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:16:28" (3/3) ... [2023-08-03 21:16:28,270 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_unroll-cond-5.wvr_bound2.c [2023-08-03 21:16:28,277 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:16:28,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:16:28,288 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:16:28,288 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:16:28,409 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 21:16:28,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 280 transitions, 582 flow [2023-08-03 21:16:28,610 INFO L124 PetriNetUnfolderBase]: 64/541 cut-off events. [2023-08-03 21:16:28,610 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 21:16:28,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 541 events. 64/541 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2286 event pairs, 0 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 281. Up to 8 conditions per place. [2023-08-03 21:16:28,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 280 transitions, 582 flow [2023-08-03 21:16:28,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 280 transitions, 582 flow [2023-08-03 21:16:28,643 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:16:28,659 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 280 transitions, 582 flow [2023-08-03 21:16:28,662 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 280 transitions, 582 flow [2023-08-03 21:16:28,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 280 transitions, 582 flow [2023-08-03 21:16:28,769 INFO L124 PetriNetUnfolderBase]: 64/541 cut-off events. [2023-08-03 21:16:28,769 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 21:16:28,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 541 events. 64/541 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2286 event pairs, 0 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 281. Up to 8 conditions per place. [2023-08-03 21:16:28,791 INFO L119 LiptonReduction]: Number of co-enabled transitions 19910 [2023-08-03 21:16:34,165 INFO L134 LiptonReduction]: Checked pairs total: 27094 [2023-08-03 21:16:34,166 INFO L136 LiptonReduction]: Total number of compositions: 295 [2023-08-03 21:16:34,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:16:34,183 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;@1d4c5c05, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:16:34,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:16:34,186 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:16:34,186 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2023-08-03 21:16:34,186 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:16:34,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:16:34,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 21:16:34,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:16:34,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:16:34,192 INFO L85 PathProgramCache]: Analyzing trace with hash 244689807, now seen corresponding path program 1 times [2023-08-03 21:16:34,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:16:34,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075821651] [2023-08-03 21:16:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:16:34,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:16:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:16:34,373 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 21:16:34,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:16:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075821651] [2023-08-03 21:16:34,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075821651] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:16:34,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:16:34,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:16:34,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075198108] [2023-08-03 21:16:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:16:34,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:16:34,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:16:34,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:16:34,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:16:34,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 575 [2023-08-03 21:16:34,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 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 21:16:34,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:16:34,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 575 [2023-08-03 21:16:34,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:16:34,734 INFO L124 PetriNetUnfolderBase]: 1734/2612 cut-off events. [2023-08-03 21:16:34,734 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-08-03 21:16:34,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5222 conditions, 2612 events. 1734/2612 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12515 event pairs, 1109 based on Foata normal form. 0/1765 useless extension candidates. Maximal degree in co-relation 4461. Up to 2524 conditions per place. [2023-08-03 21:16:34,748 INFO L140 encePairwiseOnDemand]: 568/575 looper letters, 48 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-03 21:16:34,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 236 flow [2023-08-03 21:16:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:16:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:16:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2023-08-03 21:16:34,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2023-08-03 21:16:34,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2023-08-03 21:16:34,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2023-08-03 21:16:34,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:16:34,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2023-08-03 21:16:34,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 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 21:16:34,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 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 21:16:34,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 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 21:16:34,781 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 140 flow. Second operand 3 states and 800 transitions. [2023-08-03 21:16:34,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 236 flow [2023-08-03 21:16:34,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:16:34,787 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 136 flow [2023-08-03 21:16:34,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2023-08-03 21:16:34,792 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-08-03 21:16:34,792 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 136 flow [2023-08-03 21:16:34,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 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 21:16:34,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:16:34,793 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 21:16:34,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:16:34,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:16:34,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:16:34,794 INFO L85 PathProgramCache]: Analyzing trace with hash -895521030, now seen corresponding path program 1 times [2023-08-03 21:16:34,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:16:34,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427910413] [2023-08-03 21:16:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:16:34,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:16:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:16:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:16:34,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:16:34,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427910413] [2023-08-03 21:16:34,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427910413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:16:34,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:16:34,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:16:34,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300898196] [2023-08-03 21:16:34,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:16:34,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:16:34,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:16:34,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:16:34,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:16:34,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 575 [2023-08-03 21:16:34,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 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 21:16:34,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:16:34,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 575 [2023-08-03 21:16:34,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:16:35,271 INFO L124 PetriNetUnfolderBase]: 1734/2615 cut-off events. [2023-08-03 21:16:35,271 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2023-08-03 21:16:35,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5241 conditions, 2615 events. 1734/2615 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12524 event pairs, 1111 based on Foata normal form. 1/1773 useless extension candidates. Maximal degree in co-relation 4471. Up to 2530 conditions per place. [2023-08-03 21:16:35,285 INFO L140 encePairwiseOnDemand]: 572/575 looper letters, 45 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-03 21:16:35,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 54 transitions, 232 flow [2023-08-03 21:16:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:16:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:16:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 786 transitions. [2023-08-03 21:16:35,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45565217391304347 [2023-08-03 21:16:35,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 786 transitions. [2023-08-03 21:16:35,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 786 transitions. [2023-08-03 21:16:35,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:16:35,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 786 transitions. [2023-08-03 21:16:35,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 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 21:16:35,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 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 21:16:35,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 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 21:16:35,294 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 136 flow. Second operand 3 states and 786 transitions. [2023-08-03 21:16:35,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 54 transitions, 232 flow [2023-08-03 21:16:35,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:16:35,297 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 144 flow [2023-08-03 21:16:35,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2023-08-03 21:16:35,298 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-03 21:16:35,298 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 144 flow [2023-08-03 21:16:35,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 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 21:16:35,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:16:35,299 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-03 21:16:35,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 21:16:35,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:16:35,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:16:35,300 INFO L85 PathProgramCache]: Analyzing trace with hash -174084345, now seen corresponding path program 1 times [2023-08-03 21:16:35,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:16:35,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761146276] [2023-08-03 21:16:35,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:16:35,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:16:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:16:35,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:16:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:16:35,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:16:35,353 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:16:35,354 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 21:16:35,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 21:16:35,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 21:16:35,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:16:35,356 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 21:16:35,358 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:16:35,358 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:16:35,401 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 21:16:35,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 436 transitions, 920 flow [2023-08-03 21:16:35,699 INFO L124 PetriNetUnfolderBase]: 218/1609 cut-off events. [2023-08-03 21:16:35,699 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 21:16:35,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1609 events. 218/1609 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 10650 event pairs, 1 based on Foata normal form. 0/1388 useless extension candidates. Maximal degree in co-relation 1000. Up to 32 conditions per place. [2023-08-03 21:16:35,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 391 places, 436 transitions, 920 flow [2023-08-03 21:16:35,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 391 places, 436 transitions, 920 flow [2023-08-03 21:16:35,755 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:16:35,755 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 436 transitions, 920 flow [2023-08-03 21:16:35,755 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 436 transitions, 920 flow [2023-08-03 21:16:35,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 436 transitions, 920 flow [2023-08-03 21:16:36,083 INFO L124 PetriNetUnfolderBase]: 218/1609 cut-off events. [2023-08-03 21:16:36,083 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 21:16:36,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1609 events. 218/1609 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 10650 event pairs, 1 based on Foata normal form. 0/1388 useless extension candidates. Maximal degree in co-relation 1000. Up to 32 conditions per place. [2023-08-03 21:16:36,207 INFO L119 LiptonReduction]: Number of co-enabled transitions 87596 [2023-08-03 21:16:42,418 INFO L134 LiptonReduction]: Checked pairs total: 153080 [2023-08-03 21:16:42,419 INFO L136 LiptonReduction]: Total number of compositions: 431 [2023-08-03 21:16:42,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:16:42,423 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;@1d4c5c05, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:16:42,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:16:42,425 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:16:42,425 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2023-08-03 21:16:42,425 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:16:42,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:16:42,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 21:16:42,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:16:42,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:16:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash 366618846, now seen corresponding path program 1 times [2023-08-03 21:16:42,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:16:42,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275777791] [2023-08-03 21:16:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:16:42,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:16:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:16:42,495 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 21:16:42,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:16:42,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275777791] [2023-08-03 21:16:42,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275777791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:16:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:16:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:16:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957868815] [2023-08-03 21:16:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:16:42,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:16:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:16:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:16:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:16:42,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 386 out of 867 [2023-08-03 21:16:42,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 122 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 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 21:16:42,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:16:42,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 386 of 867 [2023-08-03 21:16:42,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:18:46,317 INFO L124 PetriNetUnfolderBase]: 1508619/1851350 cut-off events. [2023-08-03 21:18:46,317 INFO L125 PetriNetUnfolderBase]: For 90867/90867 co-relation queries the response was YES. [2023-08-03 21:18:49,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3731434 conditions, 1851350 events. 1508619/1851350 cut-off events. For 90867/90867 co-relation queries the response was YES. Maximal size of possible extension queue 34908. Compared 11593674 event pairs, 888011 based on Foata normal form. 99957/1319873 useless extension candidates. Maximal degree in co-relation 1219681. Up to 1844963 conditions per place.