/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/goblint-regression_13-privatized_33-traces-v-matters_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:01:52,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:01:52,232 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:01:52,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:01:52,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:01:52,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:01:52,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:01:52,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:01:52,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:01:52,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:01:52,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:01:52,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:01:52,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:01:52,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:01:52,275 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:01:52,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:01:52,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:01:52,276 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:01:52,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:01:52,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:01:52,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:01:52,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:01:52,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:01:52,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:01:52,278 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:01:52,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:01:52,279 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:01:52,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:01:52,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:01:52,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:01:52,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:01:52,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:01:52,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:01:52,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:01:52,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:01:52,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:01:52,281 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:01:52,281 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:01:52,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:01:52,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:01:52,282 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:01:52,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:01:52,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:01:52,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:01:52,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:01:52,536 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:01:52,536 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:01:52,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_33-traces-v-matters_true_bound2.i [2023-08-03 16:01:53,749 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:01:53,954 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:01:53,954 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_33-traces-v-matters_true_bound2.i [2023-08-03 16:01:53,968 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d37fd84/0a33444071fa4cada2d49604c0b280ea/FLAG4ff64d868 [2023-08-03 16:01:53,983 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d37fd84/0a33444071fa4cada2d49604c0b280ea [2023-08-03 16:01:53,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:01:53,986 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:01:53,987 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:01:53,987 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:01:53,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:01:53,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:01:53" (1/1) ... [2023-08-03 16:01:53,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28399939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:53, skipping insertion in model container [2023-08-03 16:01:53,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:01:53" (1/1) ... [2023-08-03 16:01:54,032 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:01:54,146 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_33-traces-v-matters_true_bound2.i[1093,1106] [2023-08-03 16:01:54,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:01:54,311 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:01:54,325 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_33-traces-v-matters_true_bound2.i[1093,1106] [2023-08-03 16:01:54,339 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:01:54,341 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:01:54,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:01:54,386 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:01:54,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54 WrapperNode [2023-08-03 16:01:54,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:01:54,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:01:54,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:01:54,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:01:54,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (1/1) ... [2023-08-03 16:01:54,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (1/1) ... [2023-08-03 16:01:54,444 INFO L138 Inliner]: procedures = 162, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-08-03 16:01:54,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:01:54,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:01:54,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:01:54,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:01:54,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (1/1) ... [2023-08-03 16:01:54,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (1/1) ... [2023-08-03 16:01:54,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (1/1) ... [2023-08-03 16:01:54,458 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (1/1) ... [2023-08-03 16:01:54,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (1/1) ... [2023-08-03 16:01:54,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (1/1) ... [2023-08-03 16:01:54,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (1/1) ... [2023-08-03 16:01:54,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (1/1) ... [2023-08-03 16:01:54,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:01:54,480 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:01:54,480 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:01:54,480 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:01:54,481 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (1/1) ... [2023-08-03 16:01:54,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:01:54,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:54,509 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 16:01:54,510 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 16:01:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:01:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:01:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:01:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:01:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:01:54,535 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:01:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:01:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:01:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:01:54,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:01:54,537 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 16:01:54,641 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:01:54,643 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:01:54,805 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:01:54,811 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:01:54,812 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 16:01:54,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:01:54 BoogieIcfgContainer [2023-08-03 16:01:54,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:01:54,815 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:01:54,815 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:01:54,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:01:54,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:01:53" (1/3) ... [2023-08-03 16:01:54,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b45837a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:01:54, skipping insertion in model container [2023-08-03 16:01:54,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:54" (2/3) ... [2023-08-03 16:01:54,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b45837a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:01:54, skipping insertion in model container [2023-08-03 16:01:54,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:01:54" (3/3) ... [2023-08-03 16:01:54,821 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_33-traces-v-matters_true_bound2.i [2023-08-03 16:01:54,827 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:01:54,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:01:54,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:01:54,835 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:01:54,884 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:01:54,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 165 flow [2023-08-03 16:01:54,969 INFO L124 PetriNetUnfolderBase]: 4/107 cut-off events. [2023-08-03 16:01:54,969 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:54,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 4/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-08-03 16:01:54,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 80 transitions, 165 flow [2023-08-03 16:01:54,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 149 flow [2023-08-03 16:01:54,980 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:01:54,989 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 72 transitions, 149 flow [2023-08-03 16:01:54,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 72 transitions, 149 flow [2023-08-03 16:01:54,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 72 transitions, 149 flow [2023-08-03 16:01:55,012 INFO L124 PetriNetUnfolderBase]: 2/91 cut-off events. [2023-08-03 16:01:55,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:55,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 52. Up to 4 conditions per place. [2023-08-03 16:01:55,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 650 [2023-08-03 16:01:57,414 INFO L134 LiptonReduction]: Checked pairs total: 1811 [2023-08-03 16:01:57,414 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-03 16:01:57,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:01:57,431 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;@6f062b0a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:01:57,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:01:57,435 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:01:57,435 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-03 16:01:57,435 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:57,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:57,436 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:01:57,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:57,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:57,440 INFO L85 PathProgramCache]: Analyzing trace with hash -521760294, now seen corresponding path program 1 times [2023-08-03 16:01:57,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:57,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343683775] [2023-08-03 16:01:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:57,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:01:57,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:01:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:01:57,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:01:57,624 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:01:57,625 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 16:01:57,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 16:01:57,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:01:57,628 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 16:01:57,632 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:01:57,632 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:01:57,658 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:01:57,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 94 transitions, 200 flow [2023-08-03 16:01:57,684 INFO L124 PetriNetUnfolderBase]: 6/153 cut-off events. [2023-08-03 16:01:57,684 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:01:57,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 153 events. 6/153 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 296 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 108. Up to 6 conditions per place. [2023-08-03 16:01:57,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 94 transitions, 200 flow [2023-08-03 16:01:57,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 86 transitions, 184 flow [2023-08-03 16:01:57,686 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:01:57,686 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 86 transitions, 184 flow [2023-08-03 16:01:57,686 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 86 transitions, 184 flow [2023-08-03 16:01:57,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 86 transitions, 184 flow [2023-08-03 16:01:57,705 INFO L124 PetriNetUnfolderBase]: 3/129 cut-off events. [2023-08-03 16:01:57,705 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:01:57,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 129 events. 3/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 210 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-03 16:01:57,707 INFO L119 LiptonReduction]: Number of co-enabled transitions 1664 [2023-08-03 16:01:59,935 INFO L134 LiptonReduction]: Checked pairs total: 5151 [2023-08-03 16:01:59,936 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-03 16:01:59,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:01:59,939 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;@6f062b0a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:01:59,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:01:59,942 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:01:59,942 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-03 16:01:59,942 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 16:01:59,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:59,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:59,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:59,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:59,943 INFO L85 PathProgramCache]: Analyzing trace with hash -45584884, now seen corresponding path program 1 times [2023-08-03 16:01:59,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:59,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794726585] [2023-08-03 16:01:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:59,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:00,056 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 16:02:00,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:00,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794726585] [2023-08-03 16:02:00,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794726585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:00,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:00,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:02:00,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628092531] [2023-08-03 16:02:00,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:00,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:00,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:00,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2023-08-03 16:02:00,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 16:02:00,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:00,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2023-08-03 16:02:00,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:00,211 INFO L124 PetriNetUnfolderBase]: 403/846 cut-off events. [2023-08-03 16:02:00,211 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-03 16:02:00,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1575 conditions, 846 events. 403/846 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4741 event pairs, 168 based on Foata normal form. 0/792 useless extension candidates. Maximal degree in co-relation 238. Up to 686 conditions per place. [2023-08-03 16:02:00,218 INFO L140 encePairwiseOnDemand]: 151/154 looper letters, 24 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-03 16:02:00,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 132 flow [2023-08-03 16:02:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:00,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:00,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-08-03 16:02:00,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6103896103896104 [2023-08-03 16:02:00,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-08-03 16:02:00,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-08-03 16:02:00,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:00,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-08-03 16:02:00,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 16:02:00,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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 16:02:00,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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 16:02:00,241 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 66 flow. Second operand 3 states and 282 transitions. [2023-08-03 16:02:00,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 132 flow [2023-08-03 16:02:00,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 130 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:02:00,245 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 76 flow [2023-08-03 16:02:00,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-03 16:02:00,249 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-03 16:02:00,249 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 76 flow [2023-08-03 16:02:00,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 16:02:00,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:00,250 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:02:00,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:02:00,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:00,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:00,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1092345570, now seen corresponding path program 1 times [2023-08-03 16:02:00,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:00,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762012897] [2023-08-03 16:02:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:00,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:00,334 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 16:02:00,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:00,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762012897] [2023-08-03 16:02:00,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762012897] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:02:00,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953545588] [2023-08-03 16:02:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:00,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:00,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:00,338 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 16:02:00,358 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 16:02:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:00,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:02:00,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:02:00,460 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 16:02:00,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:02:00,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953545588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:00,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:02:00,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:02:00,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697811128] [2023-08-03 16:02:00,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:00,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:00,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:00,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:00,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:02:00,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 154 [2023-08-03 16:02:00,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 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 16:02:00,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:00,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 154 [2023-08-03 16:02:00,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:00,591 INFO L124 PetriNetUnfolderBase]: 354/677 cut-off events. [2023-08-03 16:02:00,592 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-03 16:02:00,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 677 events. 354/677 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3448 event pairs, 0 based on Foata normal form. 30/707 useless extension candidates. Maximal degree in co-relation 239. Up to 529 conditions per place. [2023-08-03 16:02:00,597 INFO L140 encePairwiseOnDemand]: 150/154 looper letters, 32 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-08-03 16:02:00,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 178 flow [2023-08-03 16:02:00,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:02:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:02:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2023-08-03 16:02:00,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5935064935064935 [2023-08-03 16:02:00,603 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2023-08-03 16:02:00,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2023-08-03 16:02:00,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:00,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2023-08-03 16:02:00,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 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 16:02:00,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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 16:02:00,611 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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 16:02:00,611 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 76 flow. Second operand 5 states and 457 transitions. [2023-08-03 16:02:00,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 178 flow [2023-08-03 16:02:00,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:02:00,613 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 90 flow [2023-08-03 16:02:00,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-03 16:02:00,614 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2023-08-03 16:02:00,614 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 90 flow [2023-08-03 16:02:00,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 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 16:02:00,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:00,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:00,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:02:00,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:00,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:00,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:00,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1643452294, now seen corresponding path program 1 times [2023-08-03 16:02:00,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:00,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211945101] [2023-08-03 16:02:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:00,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:00,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:00,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211945101] [2023-08-03 16:02:00,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211945101] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:02:00,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353462624] [2023-08-03 16:02:00,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:00,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:00,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:00,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:02:00,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:02:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:00,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:02:00,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:02:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:01,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:02:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:01,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353462624] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:02:01,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:02:01,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:02:01,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934236269] [2023-08-03 16:02:01,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:02:01,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:01,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:01,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:01,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:02:01,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 154 [2023-08-03 16:02:01,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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 16:02:01,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:01,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 154 [2023-08-03 16:02:01,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:01,166 INFO L124 PetriNetUnfolderBase]: 329/616 cut-off events. [2023-08-03 16:02:01,166 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2023-08-03 16:02:01,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 616 events. 329/616 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2955 event pairs, 0 based on Foata normal form. 6/622 useless extension candidates. Maximal degree in co-relation 221. Up to 475 conditions per place. [2023-08-03 16:02:01,170 INFO L140 encePairwiseOnDemand]: 151/154 looper letters, 32 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-03 16:02:01,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 184 flow [2023-08-03 16:02:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:01,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2023-08-03 16:02:01,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6038961038961039 [2023-08-03 16:02:01,172 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2023-08-03 16:02:01,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2023-08-03 16:02:01,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:01,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2023-08-03 16:02:01,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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 16:02:01,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 16:02:01,175 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 16:02:01,175 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 90 flow. Second operand 4 states and 372 transitions. [2023-08-03 16:02:01,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 184 flow [2023-08-03 16:02:01,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 179 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 16:02:01,178 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 83 flow [2023-08-03 16:02:01,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=83, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-08-03 16:02:01,181 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-08-03 16:02:01,181 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 83 flow [2023-08-03 16:02:01,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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 16:02:01,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:01,182 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:01,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:02:01,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 16:02:01,388 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:01,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:01,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1599269609, now seen corresponding path program 1 times [2023-08-03 16:02:01,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:01,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97333092] [2023-08-03 16:02:01,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:01,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:02:01,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:01,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97333092] [2023-08-03 16:02:01,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97333092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:01,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:01,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:02:01,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774021168] [2023-08-03 16:02:01,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:01,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:01,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:01,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:01,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:01,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 154 [2023-08-03 16:02:01,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 16:02:01,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:01,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 154 [2023-08-03 16:02:01,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:01,655 INFO L124 PetriNetUnfolderBase]: 439/877 cut-off events. [2023-08-03 16:02:01,655 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-03 16:02:01,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 877 events. 439/877 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4888 event pairs, 301 based on Foata normal form. 36/899 useless extension candidates. Maximal degree in co-relation 522. Up to 589 conditions per place. [2023-08-03 16:02:01,660 INFO L140 encePairwiseOnDemand]: 150/154 looper letters, 29 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2023-08-03 16:02:01,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 169 flow [2023-08-03 16:02:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-08-03 16:02:01,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2023-08-03 16:02:01,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-08-03 16:02:01,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-08-03 16:02:01,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:01,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-08-03 16:02:01,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 16:02:01,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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 16:02:01,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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 16:02:01,665 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 83 flow. Second operand 3 states and 287 transitions. [2023-08-03 16:02:01,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 169 flow [2023-08-03 16:02:01,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 163 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:02:01,667 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 96 flow [2023-08-03 16:02:01,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2023-08-03 16:02:01,669 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-08-03 16:02:01,669 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 96 flow [2023-08-03 16:02:01,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 16:02:01,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:01,670 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:01,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 16:02:01,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:01,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:01,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1637355336, now seen corresponding path program 1 times [2023-08-03 16:02:01,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:01,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674856192] [2023-08-03 16:02:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:01,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:02:01,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:01,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674856192] [2023-08-03 16:02:01,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674856192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:01,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:01,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:02:01,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614383324] [2023-08-03 16:02:01,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:01,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:02:01,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:01,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:02:01,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:02:01,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 154 [2023-08-03 16:02:01,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 16:02:01,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:01,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 154 [2023-08-03 16:02:01,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:02,011 INFO L124 PetriNetUnfolderBase]: 286/656 cut-off events. [2023-08-03 16:02:02,011 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2023-08-03 16:02:02,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 656 events. 286/656 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3546 event pairs, 122 based on Foata normal form. 71/725 useless extension candidates. Maximal degree in co-relation 825. Up to 319 conditions per place. [2023-08-03 16:02:02,014 INFO L140 encePairwiseOnDemand]: 145/154 looper letters, 34 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2023-08-03 16:02:02,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 244 flow [2023-08-03 16:02:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2023-08-03 16:02:02,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811688311688312 [2023-08-03 16:02:02,016 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 358 transitions. [2023-08-03 16:02:02,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 358 transitions. [2023-08-03 16:02:02,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:02,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 358 transitions. [2023-08-03 16:02:02,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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 16:02:02,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 16:02:02,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 16:02:02,019 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 96 flow. Second operand 4 states and 358 transitions. [2023-08-03 16:02:02,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 244 flow [2023-08-03 16:02:02,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:02:02,024 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 139 flow [2023-08-03 16:02:02,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-08-03 16:02:02,026 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-08-03 16:02:02,027 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 139 flow [2023-08-03 16:02:02,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 16:02:02,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:02,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:02,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:02:02,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:02,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:02,028 INFO L85 PathProgramCache]: Analyzing trace with hash -232046264, now seen corresponding path program 2 times [2023-08-03 16:02:02,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:02,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630492830] [2023-08-03 16:02:02,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:02,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:02:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:02,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630492830] [2023-08-03 16:02:02,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630492830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:02,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:02,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:02:02,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998054113] [2023-08-03 16:02:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:02,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:02,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:02:02,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2023-08-03 16:02:02,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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 16:02:02,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:02,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2023-08-03 16:02:02,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:02,315 INFO L124 PetriNetUnfolderBase]: 267/698 cut-off events. [2023-08-03 16:02:02,316 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2023-08-03 16:02:02,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 698 events. 267/698 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4112 event pairs, 119 based on Foata normal form. 40/735 useless extension candidates. Maximal degree in co-relation 996. Up to 412 conditions per place. [2023-08-03 16:02:02,323 INFO L140 encePairwiseOnDemand]: 146/154 looper letters, 42 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2023-08-03 16:02:02,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 347 flow [2023-08-03 16:02:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2023-08-03 16:02:02,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-08-03 16:02:02,326 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 350 transitions. [2023-08-03 16:02:02,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 350 transitions. [2023-08-03 16:02:02,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:02,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 350 transitions. [2023-08-03 16:02:02,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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 16:02:02,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 16:02:02,328 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 16:02:02,328 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 139 flow. Second operand 4 states and 350 transitions. [2023-08-03 16:02:02,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 347 flow [2023-08-03 16:02:02,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:02:02,331 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 201 flow [2023-08-03 16:02:02,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-08-03 16:02:02,332 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2023-08-03 16:02:02,332 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 201 flow [2023-08-03 16:02:02,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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 16:02:02,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:02,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:02,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:02:02,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:02,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:02,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1550431825, now seen corresponding path program 1 times [2023-08-03 16:02:02,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:02,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641838422] [2023-08-03 16:02:02,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:02,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:02:02,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:02,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641838422] [2023-08-03 16:02:02,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641838422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:02,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:02,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 16:02:02,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951784851] [2023-08-03 16:02:02,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:02,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:02:02,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:02,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:02:02,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:02:02,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 154 [2023-08-03 16:02:02,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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 16:02:02,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:02,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 154 [2023-08-03 16:02:02,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:02,656 INFO L124 PetriNetUnfolderBase]: 116/354 cut-off events. [2023-08-03 16:02:02,656 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2023-08-03 16:02:02,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 354 events. 116/354 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1818 event pairs, 44 based on Foata normal form. 44/396 useless extension candidates. Maximal degree in co-relation 648. Up to 214 conditions per place. [2023-08-03 16:02:02,658 INFO L140 encePairwiseOnDemand]: 148/154 looper letters, 28 selfloop transitions, 6 changer transitions 11/48 dead transitions. [2023-08-03 16:02:02,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 332 flow [2023-08-03 16:02:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-08-03 16:02:02,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551948051948052 [2023-08-03 16:02:02,660 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-08-03 16:02:02,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-08-03 16:02:02,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:02,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-08-03 16:02:02,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 16:02:02,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 16:02:02,662 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 16:02:02,662 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 201 flow. Second operand 4 states and 340 transitions. [2023-08-03 16:02:02,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 332 flow [2023-08-03 16:02:02,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:02:02,664 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 152 flow [2023-08-03 16:02:02,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2023-08-03 16:02:02,665 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2023-08-03 16:02:02,665 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 152 flow [2023-08-03 16:02:02,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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 16:02:02,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:02,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:02,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:02:02,666 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:02,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:02,666 INFO L85 PathProgramCache]: Analyzing trace with hash -375075983, now seen corresponding path program 1 times [2023-08-03 16:02:02,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:02,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271451353] [2023-08-03 16:02:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:02,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 16:02:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:02,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271451353] [2023-08-03 16:02:02,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271451353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:02,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:02,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 16:02:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390774790] [2023-08-03 16:02:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:02,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:02:02,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:02:02,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:02:02,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 154 [2023-08-03 16:02:02,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 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 16:02:02,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:02,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 154 [2023-08-03 16:02:02,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:02,984 INFO L124 PetriNetUnfolderBase]: 39/146 cut-off events. [2023-08-03 16:02:02,985 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2023-08-03 16:02:02,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 146 events. 39/146 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 540 event pairs, 22 based on Foata normal form. 5/150 useless extension candidates. Maximal degree in co-relation 325. Up to 68 conditions per place. [2023-08-03 16:02:02,985 INFO L140 encePairwiseOnDemand]: 148/154 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-08-03 16:02:02,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 268 flow [2023-08-03 16:02:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2023-08-03 16:02:02,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5438311688311688 [2023-08-03 16:02:02,987 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 335 transitions. [2023-08-03 16:02:02,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 335 transitions. [2023-08-03 16:02:02,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:02,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 335 transitions. [2023-08-03 16:02:02,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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 16:02:02,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 16:02:02,989 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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 16:02:02,989 INFO L175 Difference]: Start difference. First operand has 47 places, 29 transitions, 152 flow. Second operand 4 states and 335 transitions. [2023-08-03 16:02:02,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 268 flow [2023-08-03 16:02:02,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 242 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 16:02:02,990 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-08-03 16:02:02,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-08-03 16:02:02,991 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2023-08-03 16:02:02,991 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-08-03 16:02:02,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 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 16:02:02,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 16:02:02,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 16:02:02,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 16:02:02,992 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:02,993 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:02:02,993 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:02:02,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:02:02 BasicIcfg [2023-08-03 16:02:02,996 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:02:02,997 INFO L158 Benchmark]: Toolchain (without parser) took 9010.45ms. Allocated memory was 593.5MB in the beginning and 713.0MB in the end (delta: 119.5MB). Free memory was 537.7MB in the beginning and 317.6MB in the end (delta: 220.1MB). Peak memory consumption was 340.1MB. Max. memory is 16.0GB. [2023-08-03 16:02:02,997 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 375.4MB. Free memory is still 322.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:02:02,997 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.93ms. Allocated memory is still 593.5MB. Free memory was 537.7MB in the beginning and 518.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:02:02,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.92ms. Allocated memory is still 593.5MB. Free memory was 518.4MB in the beginning and 516.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:02:02,997 INFO L158 Benchmark]: Boogie Preprocessor took 33.82ms. Allocated memory is still 593.5MB. Free memory was 516.2MB in the beginning and 515.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:02:02,998 INFO L158 Benchmark]: RCFGBuilder took 333.62ms. Allocated memory is still 593.5MB. Free memory was 514.6MB in the beginning and 501.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 16:02:02,998 INFO L158 Benchmark]: TraceAbstraction took 8181.11ms. Allocated memory was 593.5MB in the beginning and 713.0MB in the end (delta: 119.5MB). Free memory was 500.8MB in the beginning and 317.6MB in the end (delta: 183.2MB). Peak memory consumption was 304.4MB. Max. memory is 16.0GB. [2023-08-03 16:02:02,999 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 375.4MB. Free memory is still 322.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 399.93ms. Allocated memory is still 593.5MB. Free memory was 537.7MB in the beginning and 518.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.92ms. Allocated memory is still 593.5MB. Free memory was 518.4MB in the beginning and 516.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.82ms. Allocated memory is still 593.5MB. Free memory was 516.2MB in the beginning and 515.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 333.62ms. Allocated memory is still 593.5MB. Free memory was 514.6MB in the beginning and 501.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 8181.11ms. Allocated memory was 593.5MB in the beginning and 713.0MB in the end (delta: 119.5MB). Free memory was 500.8MB in the beginning and 317.6MB in the end (delta: 183.2MB). Peak memory consumption was 304.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 74 PlacesBefore, 21 PlacesAfterwards, 72 TransitionsBefore, 18 TransitionsAfterwards, 650 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1811 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 741, independent: 600, independent conditional: 0, independent unconditional: 600, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 320, independent: 297, independent conditional: 0, independent unconditional: 297, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 741, independent: 303, independent conditional: 0, independent unconditional: 303, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 320, unknown conditional: 0, unknown unconditional: 320] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 90 PlacesBefore, 32 PlacesAfterwards, 86 TransitionsBefore, 27 TransitionsAfterwards, 1664 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 5151 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1628, independent: 1413, independent conditional: 0, independent unconditional: 1413, dependent: 215, dependent conditional: 0, dependent unconditional: 215, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 731, independent: 696, independent conditional: 0, independent unconditional: 696, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1628, independent: 717, independent conditional: 0, independent unconditional: 717, dependent: 180, dependent conditional: 0, dependent unconditional: 180, unknown: 731, unknown conditional: 0, unknown unconditional: 731] , Statistics on independence cache: Total cache size (in pairs): 70, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 93 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 107 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 578 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 368 mSDsluCounter, 53 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 143 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1031 IncrementalHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 143 mSolverCounterUnsat, 20 mSDtfsCounter, 1031 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=6, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 699 SizeOfPredicates, 0 NumberOfNonLiveVariables, 279 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 41/49 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:02:03,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...