/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy8.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:10:48,884 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:10:48,952 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:10:48,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:10:48,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:10:48,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:10:48,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:10:48,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:10:48,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:10:48,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:10:48,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:10:48,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:10:48,971 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:10:48,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:10:48,971 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:10:48,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:10:48,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:10:48,972 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:10:48,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:10:48,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:10:48,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:10:48,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:10:48,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:10:48,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:10:48,974 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:10:48,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:10:48,974 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:10:48,975 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:10:48,975 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:10:48,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:10:48,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:10:48,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:10:48,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:10:48,976 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:10:48,976 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:10:48,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:10:48,976 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:10:48,976 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:10:48,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:10:48,977 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:10:48,977 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:10:48,981 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 21:10:49,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:10:49,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:10:49,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:10:49,195 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:10:49,195 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:10:49,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy8.wvr_bound2.c [2023-08-03 21:10:50,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:10:50,332 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:10:50,332 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy8.wvr_bound2.c [2023-08-03 21:10:50,337 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9586f113/62b8ebad74db4cfbb42cefafd16d69b3/FLAGd3047dbd5 [2023-08-03 21:10:50,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9586f113/62b8ebad74db4cfbb42cefafd16d69b3 [2023-08-03 21:10:50,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:10:50,348 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:10:50,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:10:50,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:10:50,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:10:50,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ebed60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50, skipping insertion in model container [2023-08-03 21:10:50,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,364 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:10:50,451 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy8.wvr_bound2.c[2143,2156] [2023-08-03 21:10:50,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:10:50,457 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:10:50,468 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy8.wvr_bound2.c[2143,2156] [2023-08-03 21:10:50,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:10:50,473 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:10:50,473 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:10:50,477 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:10:50,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50 WrapperNode [2023-08-03 21:10:50,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:10:50,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:10:50,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:10:50,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:10:50,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,501 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-08-03 21:10:50,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:10:50,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:10:50,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:10:50,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:10:50,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:10:50,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:10:50,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:10:50,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:10:50,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (1/1) ... [2023-08-03 21:10:50,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:10:50,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:10:50,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 21:10:50,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 21:10:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:10:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 21:10:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 21:10:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 21:10:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 21:10:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:10:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:10:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:10:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 21:10:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 21:10:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:10:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:10:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:10:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:10:50,564 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 21:10:50,619 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:10:50,621 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:10:50,785 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:10:50,799 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:10:50,799 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 21:10:50,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:10:50 BoogieIcfgContainer [2023-08-03 21:10:50,801 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:10:50,802 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:10:50,802 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:10:50,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:10:50,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:10:50" (1/3) ... [2023-08-03 21:10:50,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623c8ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:10:50, skipping insertion in model container [2023-08-03 21:10:50,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:10:50" (2/3) ... [2023-08-03 21:10:50,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623c8ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:10:50, skipping insertion in model container [2023-08-03 21:10:50,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:10:50" (3/3) ... [2023-08-03 21:10:50,806 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_test-easy8.wvr_bound2.c [2023-08-03 21:10:50,811 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:10:50,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:10:50,817 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:10:50,817 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:10:50,848 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 21:10:50,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 97 transitions, 216 flow [2023-08-03 21:10:50,921 INFO L124 PetriNetUnfolderBase]: 27/230 cut-off events. [2023-08-03 21:10:50,921 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 21:10:50,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 230 events. 27/230 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 776 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2023-08-03 21:10:50,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 97 transitions, 216 flow [2023-08-03 21:10:50,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 97 transitions, 216 flow [2023-08-03 21:10:50,937 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:10:50,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 97 transitions, 216 flow [2023-08-03 21:10:50,946 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 97 transitions, 216 flow [2023-08-03 21:10:50,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 97 transitions, 216 flow [2023-08-03 21:10:50,999 INFO L124 PetriNetUnfolderBase]: 27/230 cut-off events. [2023-08-03 21:10:51,000 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 21:10:51,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 230 events. 27/230 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 776 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2023-08-03 21:10:51,002 INFO L119 LiptonReduction]: Number of co-enabled transitions 1458 [2023-08-03 21:10:52,618 INFO L134 LiptonReduction]: Checked pairs total: 2209 [2023-08-03 21:10:52,618 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-03 21:10:52,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:10:52,644 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;@abe8427, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:10:52,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:10:52,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:10:52,650 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 21:10:52,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:10:52,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:52,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 21:10:52,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:52,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:52,655 INFO L85 PathProgramCache]: Analyzing trace with hash 356542662, now seen corresponding path program 1 times [2023-08-03 21:10:52,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:52,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010033279] [2023-08-03 21:10:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:52,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:10:52,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:52,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010033279] [2023-08-03 21:10:52,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010033279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:10:52,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:10:52,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:10:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379213917] [2023-08-03 21:10:52,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:10:52,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:10:52,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:52,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:10:52,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:10:52,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 181 [2023-08-03 21:10:52,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:52,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:52,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 181 [2023-08-03 21:10:52,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:52,902 INFO L124 PetriNetUnfolderBase]: 57/152 cut-off events. [2023-08-03 21:10:52,902 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-03 21:10:52,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 57/152 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 542 event pairs, 21 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 220. Up to 133 conditions per place. [2023-08-03 21:10:52,906 INFO L140 encePairwiseOnDemand]: 177/181 looper letters, 21 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-03 21:10:52,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 122 flow [2023-08-03 21:10:52,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:10:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:10:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-08-03 21:10:52,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47697974217311234 [2023-08-03 21:10:52,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-08-03 21:10:52,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-08-03 21:10:52,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:52,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-08-03 21:10:52,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:52,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:52,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:52,934 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 74 flow. Second operand 3 states and 259 transitions. [2023-08-03 21:10:52,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 122 flow [2023-08-03 21:10:52,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:10:52,938 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 80 flow [2023-08-03 21:10:52,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-03 21:10:52,941 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-03 21:10:52,941 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 80 flow [2023-08-03 21:10:52,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:52,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:52,942 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:10:52,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:10:52,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:52,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:52,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1815901481, now seen corresponding path program 1 times [2023-08-03 21:10:52,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:52,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373319] [2023-08-03 21:10:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:10:52,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:10:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:10:53,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:10:53,007 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:10:53,008 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 21:10:53,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 21:10:53,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 21:10:53,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 21:10:53,009 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 21:10:53,011 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:10:53,011 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:10:53,024 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 21:10:53,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 278 flow [2023-08-03 21:10:53,082 INFO L124 PetriNetUnfolderBase]: 119/776 cut-off events. [2023-08-03 21:10:53,082 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 21:10:53,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 776 events. 119/776 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3953 event pairs, 1 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 449. Up to 32 conditions per place. [2023-08-03 21:10:53,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 115 transitions, 278 flow [2023-08-03 21:10:53,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 115 transitions, 278 flow [2023-08-03 21:10:53,087 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:10:53,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 115 transitions, 278 flow [2023-08-03 21:10:53,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 115 transitions, 278 flow [2023-08-03 21:10:53,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 278 flow [2023-08-03 21:10:53,131 INFO L124 PetriNetUnfolderBase]: 119/776 cut-off events. [2023-08-03 21:10:53,131 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 21:10:53,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 776 events. 119/776 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3953 event pairs, 1 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 449. Up to 32 conditions per place. [2023-08-03 21:10:53,138 INFO L119 LiptonReduction]: Number of co-enabled transitions 3456 [2023-08-03 21:10:54,851 INFO L134 LiptonReduction]: Checked pairs total: 6064 [2023-08-03 21:10:54,851 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 21:10:54,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:10:54,853 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;@abe8427, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:10:54,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:10:54,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:10:54,855 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 21:10:54,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:10:54,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:54,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 21:10:54,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:54,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash 575755823, now seen corresponding path program 1 times [2023-08-03 21:10:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:54,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712253167] [2023-08-03 21:10:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:10:54,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:54,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712253167] [2023-08-03 21:10:54,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712253167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:10:54,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:10:54,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:10:54,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023638445] [2023-08-03 21:10:54,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:10:54,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:10:54,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:54,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:10:54,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:10:54,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 212 [2023-08-03 21:10:54,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:54,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:54,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 212 [2023-08-03 21:10:54,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:55,111 INFO L124 PetriNetUnfolderBase]: 1053/1879 cut-off events. [2023-08-03 21:10:55,111 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2023-08-03 21:10:55,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 1879 events. 1053/1879 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9487 event pairs, 641 based on Foata normal form. 0/1662 useless extension candidates. Maximal degree in co-relation 1484. Up to 1725 conditions per place. [2023-08-03 21:10:55,117 INFO L140 encePairwiseOnDemand]: 208/212 looper letters, 30 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-03 21:10:55,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 188 flow [2023-08-03 21:10:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:10:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:10:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-08-03 21:10:55,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638364779874214 [2023-08-03 21:10:55,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-08-03 21:10:55,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-08-03 21:10:55,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:55,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-08-03 21:10:55,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,121 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 120 flow. Second operand 3 states and 295 transitions. [2023-08-03 21:10:55,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 188 flow [2023-08-03 21:10:55,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:10:55,123 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 130 flow [2023-08-03 21:10:55,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-08-03 21:10:55,124 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-08-03 21:10:55,124 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 130 flow [2023-08-03 21:10:55,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:55,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:10:55,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:10:55,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:55,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:55,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1709944692, now seen corresponding path program 1 times [2023-08-03 21:10:55,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:55,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628123640] [2023-08-03 21:10:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:55,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:55,159 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 21:10:55,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:55,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628123640] [2023-08-03 21:10:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628123640] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:10:55,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60284441] [2023-08-03 21:10:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:55,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:55,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:10:55,163 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 21:10:55,199 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 21:10:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:55,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:10:55,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:10:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:10:55,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:10:55,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60284441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:10:55,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:10:55,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 21:10:55,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229514728] [2023-08-03 21:10:55,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:10:55,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:10:55,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:55,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:10:55,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:10:55,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 212 [2023-08-03 21:10:55,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:55,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 212 [2023-08-03 21:10:55,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:55,358 INFO L124 PetriNetUnfolderBase]: 1047/1887 cut-off events. [2023-08-03 21:10:55,358 INFO L125 PetriNetUnfolderBase]: For 319/319 co-relation queries the response was YES. [2023-08-03 21:10:55,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3932 conditions, 1887 events. 1047/1887 cut-off events. For 319/319 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 9594 event pairs, 644 based on Foata normal form. 0/1682 useless extension candidates. Maximal degree in co-relation 3904. Up to 1679 conditions per place. [2023-08-03 21:10:55,365 INFO L140 encePairwiseOnDemand]: 209/212 looper letters, 33 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-03 21:10:55,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 210 flow [2023-08-03 21:10:55,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:10:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:10:55,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-03 21:10:55,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2023-08-03 21:10:55,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-03 21:10:55,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-03 21:10:55,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:55,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-03 21:10:55,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,368 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 130 flow. Second operand 3 states and 296 transitions. [2023-08-03 21:10:55,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 210 flow [2023-08-03 21:10:55,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:10:55,370 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 140 flow [2023-08-03 21:10:55,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-03 21:10:55,371 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-08-03 21:10:55,371 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 140 flow [2023-08-03 21:10:55,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:55,371 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:10:55,378 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 21:10:55,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:55,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:55,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1057341162, now seen corresponding path program 1 times [2023-08-03 21:10:55,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:55,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416798655] [2023-08-03 21:10:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:55,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:55,614 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 21:10:55,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:55,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416798655] [2023-08-03 21:10:55,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416798655] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:10:55,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750018071] [2023-08-03 21:10:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:55,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:55,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:10:55,616 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 21:10:55,618 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 21:10:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:55,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:10:55,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:10:55,680 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 21:10:55,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:10:55,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750018071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:10:55,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:10:55,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:10:55,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874340842] [2023-08-03 21:10:55,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:10:55,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:10:55,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:55,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:10:55,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:10:55,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 212 [2023-08-03 21:10:55,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:55,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 212 [2023-08-03 21:10:55,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:55,810 INFO L124 PetriNetUnfolderBase]: 1043/1877 cut-off events. [2023-08-03 21:10:55,810 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-03 21:10:55,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1877 events. 1043/1877 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9468 event pairs, 427 based on Foata normal form. 4/1712 useless extension candidates. Maximal degree in co-relation 1517. Up to 1698 conditions per place. [2023-08-03 21:10:55,817 INFO L140 encePairwiseOnDemand]: 208/212 looper letters, 32 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-03 21:10:55,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 221 flow [2023-08-03 21:10:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:10:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:10:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 466 transitions. [2023-08-03 21:10:55,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.439622641509434 [2023-08-03 21:10:55,819 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 466 transitions. [2023-08-03 21:10:55,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 466 transitions. [2023-08-03 21:10:55,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:55,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 466 transitions. [2023-08-03 21:10:55,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.2) internal successors, (466), 5 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,822 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,822 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 140 flow. Second operand 5 states and 466 transitions. [2023-08-03 21:10:55,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 221 flow [2023-08-03 21:10:55,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 21:10:55,823 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 149 flow [2023-08-03 21:10:55,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-03 21:10:55,824 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2023-08-03 21:10:55,824 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 149 flow [2023-08-03 21:10:55,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:55,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:55,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:10:55,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 21:10:56,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:56,030 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:56,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:56,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1156539471, now seen corresponding path program 1 times [2023-08-03 21:10:56,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:56,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190783690] [2023-08-03 21:10:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:56,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:10:56,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:56,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190783690] [2023-08-03 21:10:56,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190783690] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:10:56,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016351365] [2023-08-03 21:10:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:56,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:56,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:10:56,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:10:56,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 21:10:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:56,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:10:56,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:10:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:10:56,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:10:56,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016351365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:10:56,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:10:56,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 21:10:56,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684371579] [2023-08-03 21:10:56,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:10:56,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:10:56,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:10:56,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:10:56,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 212 [2023-08-03 21:10:56,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:56,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:56,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 212 [2023-08-03 21:10:56,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:56,301 INFO L124 PetriNetUnfolderBase]: 953/1763 cut-off events. [2023-08-03 21:10:56,301 INFO L125 PetriNetUnfolderBase]: For 313/313 co-relation queries the response was YES. [2023-08-03 21:10:56,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3734 conditions, 1763 events. 953/1763 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8953 event pairs, 616 based on Foata normal form. 0/1626 useless extension candidates. Maximal degree in co-relation 1674. Up to 1287 conditions per place. [2023-08-03 21:10:56,307 INFO L140 encePairwiseOnDemand]: 209/212 looper letters, 40 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-03 21:10:56,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 263 flow [2023-08-03 21:10:56,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:10:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:10:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-08-03 21:10:56,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47327044025157233 [2023-08-03 21:10:56,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-08-03 21:10:56,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-08-03 21:10:56,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:56,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-08-03 21:10:56,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:56,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:56,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:56,311 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 149 flow. Second operand 3 states and 301 transitions. [2023-08-03 21:10:56,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 263 flow [2023-08-03 21:10:56,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 256 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:10:56,314 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 154 flow [2023-08-03 21:10:56,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-03 21:10:56,316 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-08-03 21:10:56,316 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 154 flow [2023-08-03 21:10:56,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:56,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:56,316 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:10:56,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 21:10:56,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:56,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:56,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:56,521 INFO L85 PathProgramCache]: Analyzing trace with hash 675926548, now seen corresponding path program 1 times [2023-08-03 21:10:56,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:56,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969748651] [2023-08-03 21:10:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:56,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:10:56,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:56,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969748651] [2023-08-03 21:10:56,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969748651] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:10:56,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764618363] [2023-08-03 21:10:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:56,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:56,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:10:56,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:10:56,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 21:10:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:56,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:10:56,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:10:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:10:56,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:10:56,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:10:56,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764618363] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:10:56,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:10:56,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 21:10:56,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123842182] [2023-08-03 21:10:56,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:10:56,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:10:56,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:56,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:10:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:10:56,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 212 [2023-08-03 21:10:56,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:56,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:56,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 212 [2023-08-03 21:10:56,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:56,805 INFO L124 PetriNetUnfolderBase]: 851/1563 cut-off events. [2023-08-03 21:10:56,805 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2023-08-03 21:10:56,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3490 conditions, 1563 events. 851/1563 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7583 event pairs, 370 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 1367. Up to 1415 conditions per place. [2023-08-03 21:10:56,811 INFO L140 encePairwiseOnDemand]: 209/212 looper letters, 33 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-08-03 21:10:56,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 228 flow [2023-08-03 21:10:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:10:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:10:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2023-08-03 21:10:56,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44693396226415094 [2023-08-03 21:10:56,813 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2023-08-03 21:10:56,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2023-08-03 21:10:56,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:56,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2023-08-03 21:10:56,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:56,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:56,817 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:56,817 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 154 flow. Second operand 4 states and 379 transitions. [2023-08-03 21:10:56,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 228 flow [2023-08-03 21:10:56,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:10:56,819 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 150 flow [2023-08-03 21:10:56,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-08-03 21:10:56,820 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-08-03 21:10:56,820 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 150 flow [2023-08-03 21:10:56,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:56,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:56,820 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:10:56,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 21:10:57,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:57,025 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:57,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:57,025 INFO L85 PathProgramCache]: Analyzing trace with hash 934098254, now seen corresponding path program 1 times [2023-08-03 21:10:57,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:57,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423036270] [2023-08-03 21:10:57,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:57,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:10:57,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:57,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423036270] [2023-08-03 21:10:57,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423036270] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:10:57,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3911007] [2023-08-03 21:10:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:57,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:57,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:10:57,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:10:57,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 21:10:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:57,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:10:57,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:10:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:10:57,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:10:57,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3911007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:10:57,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:10:57,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 21:10:57,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746963129] [2023-08-03 21:10:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:10:57,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:10:57,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:57,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:10:57,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:10:57,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 212 [2023-08-03 21:10:57,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:57,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:57,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 212 [2023-08-03 21:10:57,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:57,313 INFO L124 PetriNetUnfolderBase]: 819/1507 cut-off events. [2023-08-03 21:10:57,313 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2023-08-03 21:10:57,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3333 conditions, 1507 events. 819/1507 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7244 event pairs, 44 based on Foata normal form. 16/1453 useless extension candidates. Maximal degree in co-relation 1982. Up to 1246 conditions per place. [2023-08-03 21:10:57,321 INFO L140 encePairwiseOnDemand]: 208/212 looper letters, 39 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-08-03 21:10:57,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 256 flow [2023-08-03 21:10:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:10:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:10:57,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2023-08-03 21:10:57,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44528301886792454 [2023-08-03 21:10:57,322 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2023-08-03 21:10:57,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2023-08-03 21:10:57,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:57,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2023-08-03 21:10:57,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 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 21:10:57,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:57,325 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:57,325 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 150 flow. Second operand 5 states and 472 transitions. [2023-08-03 21:10:57,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 256 flow [2023-08-03 21:10:57,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 244 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 21:10:57,327 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 155 flow [2023-08-03 21:10:57,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-08-03 21:10:57,329 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-08-03 21:10:57,329 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 155 flow [2023-08-03 21:10:57,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:57,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:57,329 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:10:57,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 21:10:57,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:57,534 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:57,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:57,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1654164567, now seen corresponding path program 1 times [2023-08-03 21:10:57,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:57,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112504897] [2023-08-03 21:10:57,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:57,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 21:10:57,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:57,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112504897] [2023-08-03 21:10:57,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112504897] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:10:57,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712395952] [2023-08-03 21:10:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:57,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:57,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:10:57,607 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:10:57,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 21:10:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:57,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:10:57,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:10:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:10:57,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:10:57,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712395952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:10:57,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:10:57,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 21:10:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385707963] [2023-08-03 21:10:57,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:10:57,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:10:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:57,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:10:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:10:57,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 212 [2023-08-03 21:10:57,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:57,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:57,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 212 [2023-08-03 21:10:57,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:57,792 INFO L124 PetriNetUnfolderBase]: 826/1566 cut-off events. [2023-08-03 21:10:57,793 INFO L125 PetriNetUnfolderBase]: For 481/481 co-relation queries the response was YES. [2023-08-03 21:10:57,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3484 conditions, 1566 events. 826/1566 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7785 event pairs, 556 based on Foata normal form. 0/1528 useless extension candidates. Maximal degree in co-relation 2119. Up to 1047 conditions per place. [2023-08-03 21:10:57,800 INFO L140 encePairwiseOnDemand]: 209/212 looper letters, 41 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-03 21:10:57,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 269 flow [2023-08-03 21:10:57,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:10:57,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:10:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-08-03 21:10:57,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47327044025157233 [2023-08-03 21:10:57,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-08-03 21:10:57,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-08-03 21:10:57,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:57,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-08-03 21:10:57,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:57,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:57,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:57,803 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 155 flow. Second operand 3 states and 301 transitions. [2023-08-03 21:10:57,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 269 flow [2023-08-03 21:10:57,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 262 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:10:57,805 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 160 flow [2023-08-03 21:10:57,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-08-03 21:10:57,806 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2023-08-03 21:10:57,806 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 160 flow [2023-08-03 21:10:57,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:57,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:57,806 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, 1, 1] [2023-08-03 21:10:57,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 21:10:58,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:58,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:58,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1497350149, now seen corresponding path program 1 times [2023-08-03 21:10:58,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:58,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210945599] [2023-08-03 21:10:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:58,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:10:58,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210945599] [2023-08-03 21:10:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210945599] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:10:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845140163] [2023-08-03 21:10:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:58,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:58,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:10:58,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:10:58,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 21:10:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:58,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:10:58,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:10:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:10:58,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:10:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:10:58,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845140163] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:10:58,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:10:58,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 21:10:58,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701025576] [2023-08-03 21:10:58,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:10:58,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:10:58,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:58,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:10:58,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:10:58,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 212 [2023-08-03 21:10:58,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:58,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:58,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 212 [2023-08-03 21:10:58,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:58,314 INFO L124 PetriNetUnfolderBase]: 778/1478 cut-off events. [2023-08-03 21:10:58,314 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2023-08-03 21:10:58,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 1478 events. 778/1478 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7013 event pairs, 356 based on Foata normal form. 8/1481 useless extension candidates. Maximal degree in co-relation 2127. Up to 1245 conditions per place. [2023-08-03 21:10:58,321 INFO L140 encePairwiseOnDemand]: 209/212 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-03 21:10:58,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 252 flow [2023-08-03 21:10:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:10:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:10:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 383 transitions. [2023-08-03 21:10:58,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4516509433962264 [2023-08-03 21:10:58,323 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 383 transitions. [2023-08-03 21:10:58,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 383 transitions. [2023-08-03 21:10:58,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:58,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 383 transitions. [2023-08-03 21:10:58,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:58,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:58,325 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:58,325 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 160 flow. Second operand 4 states and 383 transitions. [2023-08-03 21:10:58,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 252 flow [2023-08-03 21:10:58,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:10:58,329 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 156 flow [2023-08-03 21:10:58,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-03 21:10:58,330 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-08-03 21:10:58,330 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 156 flow [2023-08-03 21:10:58,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:58,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:58,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 21:10:58,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 21:10:58,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:58,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:58,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2091285033, now seen corresponding path program 1 times [2023-08-03 21:10:58,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:58,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283702483] [2023-08-03 21:10:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:58,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 21:10:58,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:58,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283702483] [2023-08-03 21:10:58,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283702483] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:10:58,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16505120] [2023-08-03 21:10:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:58,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:58,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:10:58,624 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:10:58,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 21:10:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:58,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:10:58,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:10:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 21:10:58,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:10:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 21:10:58,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16505120] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:10:58,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:10:58,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 21:10:58,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833080652] [2023-08-03 21:10:58,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:10:58,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:10:58,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:58,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:10:58,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:10:58,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 212 [2023-08-03 21:10:58,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:58,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:58,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 212 [2023-08-03 21:10:58,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:58,858 INFO L124 PetriNetUnfolderBase]: 534/1034 cut-off events. [2023-08-03 21:10:58,859 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2023-08-03 21:10:58,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2405 conditions, 1034 events. 534/1034 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4305 event pairs, 215 based on Foata normal form. 32/1061 useless extension candidates. Maximal degree in co-relation 1885. Up to 444 conditions per place. [2023-08-03 21:10:58,865 INFO L140 encePairwiseOnDemand]: 208/212 looper letters, 43 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-03 21:10:58,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 286 flow [2023-08-03 21:10:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:10:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:10:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2023-08-03 21:10:58,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45872641509433965 [2023-08-03 21:10:58,867 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2023-08-03 21:10:58,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2023-08-03 21:10:58,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:58,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2023-08-03 21:10:58,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:58,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:58,869 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:58,869 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 156 flow. Second operand 4 states and 389 transitions. [2023-08-03 21:10:58,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 286 flow [2023-08-03 21:10:58,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 280 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 21:10:58,871 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 170 flow [2023-08-03 21:10:58,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-08-03 21:10:58,872 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2023-08-03 21:10:58,872 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 170 flow [2023-08-03 21:10:58,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:58,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:58,872 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:10:58,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 21:10:59,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-03 21:10:59,077 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:59,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash -591218862, now seen corresponding path program 1 times [2023-08-03 21:10:59,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:59,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384030486] [2023-08-03 21:10:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:59,117 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 21:10:59,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:59,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384030486] [2023-08-03 21:10:59,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384030486] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:10:59,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188027627] [2023-08-03 21:10:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:59,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:59,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:10:59,141 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:10:59,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 21:10:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:59,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:10:59,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:10:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 21:10:59,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:10:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 21:10:59,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188027627] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:10:59,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:10:59,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 21:10:59,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732931869] [2023-08-03 21:10:59,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:10:59,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:10:59,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:59,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:10:59,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:10:59,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 212 [2023-08-03 21:10:59,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 170 flow. Second operand has 5 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 21:10:59,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:59,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 212 [2023-08-03 21:10:59,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:59,325 INFO L124 PetriNetUnfolderBase]: 530/1023 cut-off events. [2023-08-03 21:10:59,325 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2023-08-03 21:10:59,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 1023 events. 530/1023 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4236 event pairs, 439 based on Foata normal form. 9/1027 useless extension candidates. Maximal degree in co-relation 2101. Up to 749 conditions per place. [2023-08-03 21:10:59,329 INFO L140 encePairwiseOnDemand]: 208/212 looper letters, 43 selfloop transitions, 3 changer transitions 2/52 dead transitions. [2023-08-03 21:10:59,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 302 flow [2023-08-03 21:10:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:10:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:10:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2023-08-03 21:10:59,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45872641509433965 [2023-08-03 21:10:59,330 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2023-08-03 21:10:59,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2023-08-03 21:10:59,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:59,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2023-08-03 21:10:59,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,332 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,332 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 170 flow. Second operand 4 states and 389 transitions. [2023-08-03 21:10:59,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 302 flow [2023-08-03 21:10:59,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 298 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 21:10:59,335 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 174 flow [2023-08-03 21:10:59,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-08-03 21:10:59,336 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2023-08-03 21:10:59,336 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 174 flow [2023-08-03 21:10:59,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 21:10:59,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:59,337 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:10:59,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-03 21:10:59,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:10:59,541 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:59,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:59,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1435511168, now seen corresponding path program 1 times [2023-08-03 21:10:59,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:59,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89086203] [2023-08-03 21:10:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:59,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 21:10:59,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:59,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89086203] [2023-08-03 21:10:59,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89086203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:10:59,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:10:59,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:10:59,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987503793] [2023-08-03 21:10:59,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:10:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:10:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:59,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:10:59,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:10:59,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 212 [2023-08-03 21:10:59,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:59,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 212 [2023-08-03 21:10:59,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:59,741 INFO L124 PetriNetUnfolderBase]: 725/1394 cut-off events. [2023-08-03 21:10:59,741 INFO L125 PetriNetUnfolderBase]: For 1104/1104 co-relation queries the response was YES. [2023-08-03 21:10:59,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3667 conditions, 1394 events. 725/1394 cut-off events. For 1104/1104 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6920 event pairs, 199 based on Foata normal form. 1/1385 useless extension candidates. Maximal degree in co-relation 3471. Up to 682 conditions per place. [2023-08-03 21:10:59,746 INFO L140 encePairwiseOnDemand]: 207/212 looper letters, 52 selfloop transitions, 4 changer transitions 1/61 dead transitions. [2023-08-03 21:10:59,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 405 flow [2023-08-03 21:10:59,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:10:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:10:59,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-03 21:10:59,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-03 21:10:59,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-03 21:10:59,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-03 21:10:59,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:59,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-03 21:10:59,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,749 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 174 flow. Second operand 3 states and 318 transitions. [2023-08-03 21:10:59,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 405 flow [2023-08-03 21:10:59,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 389 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 21:10:59,752 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 200 flow [2023-08-03 21:10:59,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2023-08-03 21:10:59,753 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2023-08-03 21:10:59,753 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 200 flow [2023-08-03 21:10:59,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:10:59,753 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:10:59,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 21:10:59,753 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:10:59,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:10:59,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1577850186, now seen corresponding path program 2 times [2023-08-03 21:10:59,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:10:59,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679359474] [2023-08-03 21:10:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:10:59,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:10:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:10:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 21:10:59,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:10:59,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679359474] [2023-08-03 21:10:59,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679359474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:10:59,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:10:59,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:10:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942337270] [2023-08-03 21:10:59,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:10:59,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:10:59,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:10:59,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:10:59,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:10:59,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 212 [2023-08-03 21:10:59,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:10:59,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 212 [2023-08-03 21:10:59,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:10:59,963 INFO L124 PetriNetUnfolderBase]: 283/674 cut-off events. [2023-08-03 21:10:59,963 INFO L125 PetriNetUnfolderBase]: For 1198/1198 co-relation queries the response was YES. [2023-08-03 21:10:59,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 674 events. 283/674 cut-off events. For 1198/1198 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3185 event pairs, 94 based on Foata normal form. 180/848 useless extension candidates. Maximal degree in co-relation 2053. Up to 494 conditions per place. [2023-08-03 21:10:59,968 INFO L140 encePairwiseOnDemand]: 208/212 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2023-08-03 21:10:59,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 338 flow [2023-08-03 21:10:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:10:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:10:59,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-03 21:10:59,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858490566037736 [2023-08-03 21:10:59,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-03 21:10:59,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-03 21:10:59,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:10:59,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-03 21:10:59,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,971 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 200 flow. Second operand 3 states and 309 transitions. [2023-08-03 21:10:59,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 338 flow [2023-08-03 21:10:59,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 331 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 21:10:59,973 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2023-08-03 21:10:59,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2023-08-03 21:10:59,974 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2023-08-03 21:10:59,974 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2023-08-03 21:10:59,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:10:59,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 21:10:59,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 21:10:59,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 21:10:59,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 21:10:59,975 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:10:59,976 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:10:59,976 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:10:59,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:10:59 BasicIcfg [2023-08-03 21:10:59,979 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:10:59,979 INFO L158 Benchmark]: Toolchain (without parser) took 9631.60ms. Allocated memory was 448.8MB in the beginning and 650.1MB in the end (delta: 201.3MB). Free memory was 413.6MB in the beginning and 277.1MB in the end (delta: 136.5MB). Peak memory consumption was 340.2MB. Max. memory is 16.0GB. [2023-08-03 21:10:59,979 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 448.8MB. Free memory is still 405.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:10:59,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 128.81ms. Allocated memory is still 448.8MB. Free memory was 413.6MB in the beginning and 402.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 21:10:59,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.33ms. Allocated memory is still 448.8MB. Free memory was 402.7MB in the beginning and 401.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:10:59,980 INFO L158 Benchmark]: Boogie Preprocessor took 14.47ms. Allocated memory is still 448.8MB. Free memory was 401.1MB in the beginning and 399.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:10:59,980 INFO L158 Benchmark]: RCFGBuilder took 284.67ms. Allocated memory is still 448.8MB. Free memory was 399.4MB in the beginning and 385.6MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 21:10:59,980 INFO L158 Benchmark]: TraceAbstraction took 9177.02ms. Allocated memory was 448.8MB in the beginning and 650.1MB in the end (delta: 201.3MB). Free memory was 384.8MB in the beginning and 277.1MB in the end (delta: 107.7MB). Peak memory consumption was 310.9MB. Max. memory is 16.0GB. [2023-08-03 21:10:59,981 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 448.8MB. Free memory is still 405.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 128.81ms. Allocated memory is still 448.8MB. Free memory was 413.6MB in the beginning and 402.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 23.33ms. Allocated memory is still 448.8MB. Free memory was 402.7MB in the beginning and 401.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.47ms. Allocated memory is still 448.8MB. Free memory was 401.1MB in the beginning and 399.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 284.67ms. Allocated memory is still 448.8MB. Free memory was 399.4MB in the beginning and 385.6MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 9177.02ms. Allocated memory was 448.8MB in the beginning and 650.1MB in the end (delta: 201.3MB). Free memory was 384.8MB in the beginning and 277.1MB in the end (delta: 107.7MB). Peak memory consumption was 310.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 92 PlacesBefore, 27 PlacesAfterwards, 97 TransitionsBefore, 26 TransitionsAfterwards, 1458 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 84 TotalNumberOfCompositions, 2209 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1899, independent: 1876, independent conditional: 0, independent unconditional: 1876, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 887, independent: 877, independent conditional: 0, independent unconditional: 877, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1899, independent: 999, independent conditional: 0, independent unconditional: 999, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 887, unknown conditional: 0, unknown unconditional: 887] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 109 PlacesBefore, 37 PlacesAfterwards, 115 TransitionsBefore, 36 TransitionsAfterwards, 3456 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 7 ChoiceCompositions, 97 TotalNumberOfCompositions, 6064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4786, independent: 4739, independent conditional: 0, independent unconditional: 4739, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2014, independent: 1995, independent conditional: 0, independent unconditional: 1995, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4786, independent: 2744, independent conditional: 0, independent unconditional: 2744, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 2014, unknown conditional: 0, unknown unconditional: 2014] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 57, Positive conditional cache size: 0, Positive unconditional cache size: 57, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 75]: 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 5 procedures, 101 locations, 3 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: 2.1s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 7 procedures, 114 locations, 3 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: 6.9s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 385 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 953 IncrementalHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 22 mSDtfsCounter, 953 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 322 GetRequests, 282 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=11, InterpolantAutomatonStates: 44, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 457 NumberOfCodeBlocks, 457 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 542 ConstructedInterpolants, 0 QuantifiedInterpolants, 812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 25 InterpolantComputations, 8 PerfectInterpolantSequences, 235/260 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 21:11:00,013 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...