/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/pthread-ext_18_read_write_lock_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:52:58,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:52:58,674 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:52:58,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:52:58,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:52:58,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:52:58,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:52:58,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:52:58,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:52:58,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:52:58,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:52:58,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:52:58,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:52:58,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:52:58,713 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:52:58,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:52:58,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:52:58,714 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:52:58,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:52:58,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:52:58,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:52:58,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:52:58,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:52:58,716 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:52:58,716 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:52:58,716 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:52:58,717 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:52:58,717 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:52:58,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:52:58,718 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:52:58,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:52:58,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:52:58,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:52:58,720 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:52:58,720 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:52:58,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:52:58,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:52:58,721 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:52:58,721 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:52:58,721 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:52:58,721 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:52:58,721 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:52:58,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:52:58,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:52:58,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:52:58,934 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:52:58,934 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:52:58,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-ext_18_read_write_lock_bound2.i [2023-08-03 16:53:00,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:53:00,340 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:53:00,341 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-ext_18_read_write_lock_bound2.i [2023-08-03 16:53:00,361 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4bb0797c/3f2b9c39fca24295a01d4cfccd242588/FLAG02166ecf9 [2023-08-03 16:53:00,372 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4bb0797c/3f2b9c39fca24295a01d4cfccd242588 [2023-08-03 16:53:00,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:53:00,376 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:53:00,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:53:00,377 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:53:00,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:53:00,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6511e9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00, skipping insertion in model container [2023-08-03 16:53:00,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,440 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:53:00,561 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 16:53:00,649 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-ext_18_read_write_lock_bound2.i[31161,31174] [2023-08-03 16:53:00,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:53:00,662 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:53:00,674 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 16:53:00,680 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-03 16:53:00,682 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-03 16:53:00,695 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-ext_18_read_write_lock_bound2.i[31161,31174] [2023-08-03 16:53:00,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:53:00,720 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 16:53:00,720 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 16:53:00,720 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 16:53:00,725 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:53:00,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00 WrapperNode [2023-08-03 16:53:00,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:53:00,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:53:00,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:53:00,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:53:00,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,760 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2023-08-03 16:53:00,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:53:00,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:53:00,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:53:00,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:53:00,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:53:00,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:53:00,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:53:00,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:53:00,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (1/1) ... [2023-08-03 16:53:00,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:53:00,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:53:00,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 16:53:00,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 16:53:00,843 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 16:53:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 16:53:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:53:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 16:53:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:53:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:53:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:53:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:53:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 16:53:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:53:00,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:53:00,848 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:53:00,992 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:53:00,994 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:53:01,178 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:53:01,231 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:53:01,231 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 16:53:01,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:53:01 BoogieIcfgContainer [2023-08-03 16:53:01,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:53:01,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:53:01,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:53:01,241 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:53:01,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:53:00" (1/3) ... [2023-08-03 16:53:01,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e02e3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:53:01, skipping insertion in model container [2023-08-03 16:53:01,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:53:00" (2/3) ... [2023-08-03 16:53:01,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e02e3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:53:01, skipping insertion in model container [2023-08-03 16:53:01,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:53:01" (3/3) ... [2023-08-03 16:53:01,244 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_18_read_write_lock_bound2.i [2023-08-03 16:53:01,251 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:53:01,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:53:01,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:53:01,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:53:01,305 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:53:01,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 58 transitions, 121 flow [2023-08-03 16:53:01,416 INFO L124 PetriNetUnfolderBase]: 4/88 cut-off events. [2023-08-03 16:53:01,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:53:01,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 88 events. 4/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 45. Up to 4 conditions per place. [2023-08-03 16:53:01,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 58 transitions, 121 flow [2023-08-03 16:53:01,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 45 transitions, 95 flow [2023-08-03 16:53:01,430 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:53:01,442 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 45 transitions, 95 flow [2023-08-03 16:53:01,444 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 45 transitions, 95 flow [2023-08-03 16:53:01,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 45 transitions, 95 flow [2023-08-03 16:53:01,456 INFO L124 PetriNetUnfolderBase]: 2/62 cut-off events. [2023-08-03 16:53:01,456 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:53:01,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 62 events. 2/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 32. Up to 4 conditions per place. [2023-08-03 16:53:01,459 INFO L119 LiptonReduction]: Number of co-enabled transitions 276 [2023-08-03 16:53:02,609 INFO L134 LiptonReduction]: Checked pairs total: 504 [2023-08-03 16:53:02,609 INFO L136 LiptonReduction]: Total number of compositions: 35 [2023-08-03 16:53:02,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:53:02,631 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;@57ed9625, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:53:02,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:53:02,634 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:53:02,634 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 16:53:02,635 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:53:02,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:53:02,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:53:02,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:53:02,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:53:02,640 INFO L85 PathProgramCache]: Analyzing trace with hash 7909588, now seen corresponding path program 1 times [2023-08-03 16:53:02,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:53:02,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788008146] [2023-08-03 16:53:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:53:02,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:53:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:53:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:53:02,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:53:02,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788008146] [2023-08-03 16:53:02,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788008146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:53:02,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:53:02,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:53:02,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370742098] [2023-08-03 16:53:02,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:53:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:53:02,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:53:02,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:53:02,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:53:02,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 93 [2023-08-03 16:53:02,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:02,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:53:02,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 93 [2023-08-03 16:53:02,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:53:02,950 INFO L124 PetriNetUnfolderBase]: 10/33 cut-off events. [2023-08-03 16:53:02,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:53:02,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 33 events. 10/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 76 event pairs, 4 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 55. Up to 26 conditions per place. [2023-08-03 16:53:02,953 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 10 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-08-03 16:53:02,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 14 transitions, 57 flow [2023-08-03 16:53:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:53:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:53:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2023-08-03 16:53:02,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5627240143369175 [2023-08-03 16:53:02,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2023-08-03 16:53:02,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2023-08-03 16:53:02,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:53:02,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2023-08-03 16:53:02,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:02,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:02,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:02,987 INFO L175 Difference]: Start difference. First operand has 14 places, 11 transitions, 27 flow. Second operand 3 states and 157 transitions. [2023-08-03 16:53:02,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 14 transitions, 57 flow [2023-08-03 16:53:02,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 14 transitions, 57 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:53:02,993 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 35 flow [2023-08-03 16:53:02,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2023-08-03 16:53:03,000 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, 3 predicate places. [2023-08-03 16:53:03,001 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 35 flow [2023-08-03 16:53:03,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:03,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:53:03,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:53:03,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:53:03,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:53:03,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:53:03,003 INFO L85 PathProgramCache]: Analyzing trace with hash -995423302, now seen corresponding path program 1 times [2023-08-03 16:53:03,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:53:03,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828853289] [2023-08-03 16:53:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:53:03,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:53:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:53:03,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:53:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:53:03,053 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:53:03,053 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:53:03,054 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 16:53:03,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 16:53:03,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:53:03,056 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:53:03,059 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:53:03,059 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:53:03,069 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:53:03,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 65 transitions, 142 flow [2023-08-03 16:53:03,089 INFO L124 PetriNetUnfolderBase]: 6/130 cut-off events. [2023-08-03 16:53:03,090 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:53:03,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 130 events. 6/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 231 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2023-08-03 16:53:03,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 65 transitions, 142 flow [2023-08-03 16:53:03,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 116 flow [2023-08-03 16:53:03,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:53:03,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 52 transitions, 116 flow [2023-08-03 16:53:03,092 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 52 transitions, 116 flow [2023-08-03 16:53:03,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 116 flow [2023-08-03 16:53:03,105 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-03 16:53:03,105 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:53:03,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 63. Up to 6 conditions per place. [2023-08-03 16:53:03,107 INFO L119 LiptonReduction]: Number of co-enabled transitions 636 [2023-08-03 16:53:04,268 INFO L134 LiptonReduction]: Checked pairs total: 1279 [2023-08-03 16:53:04,269 INFO L136 LiptonReduction]: Total number of compositions: 37 [2023-08-03 16:53:04,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:53:04,272 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;@57ed9625, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:53:04,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:53:04,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:53:04,274 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 16:53:04,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:53:04,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:53:04,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:53:04,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:53:04,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:53:04,275 INFO L85 PathProgramCache]: Analyzing trace with hash 11265015, now seen corresponding path program 1 times [2023-08-03 16:53:04,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:53:04,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069535664] [2023-08-03 16:53:04,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:53:04,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:53:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:53:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:53:04,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:53:04,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069535664] [2023-08-03 16:53:04,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069535664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:53:04,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:53:04,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:53:04,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200126262] [2023-08-03 16:53:04,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:53:04,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:53:04,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:53:04,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:53:04,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:53:04,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2023-08-03 16:53:04,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:04,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:53:04,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2023-08-03 16:53:04,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:53:04,364 INFO L124 PetriNetUnfolderBase]: 76/173 cut-off events. [2023-08-03 16:53:04,364 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:53:04,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 173 events. 76/173 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 679 event pairs, 30 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 97. Up to 146 conditions per place. [2023-08-03 16:53:04,366 INFO L140 encePairwiseOnDemand]: 99/102 looper letters, 14 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-03 16:53:04,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 20 transitions, 84 flow [2023-08-03 16:53:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:53:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:53:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2023-08-03 16:53:04,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751633986928104 [2023-08-03 16:53:04,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2023-08-03 16:53:04,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2023-08-03 16:53:04,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:53:04,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2023-08-03 16:53:04,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:04,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:04,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:04,370 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 44 flow. Second operand 3 states and 176 transitions. [2023-08-03 16:53:04,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 20 transitions, 84 flow [2023-08-03 16:53:04,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 20 transitions, 82 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:53:04,371 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 54 flow [2023-08-03 16:53:04,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2023-08-03 16:53:04,372 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2023-08-03 16:53:04,372 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 54 flow [2023-08-03 16:53:04,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:04,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:53:04,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:53:04,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:53:04,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:53:04,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:53:04,374 INFO L85 PathProgramCache]: Analyzing trace with hash -231787645, now seen corresponding path program 1 times [2023-08-03 16:53:04,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:53:04,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812598447] [2023-08-03 16:53:04,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:53:04,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:53:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:53:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:53:04,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:53:04,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812598447] [2023-08-03 16:53:04,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812598447] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:53:04,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741301167] [2023-08-03 16:53:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:53:04,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:53:04,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:53:04,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:53:04,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:53:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:53:04,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:53:04,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:53:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:53:04,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:53:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:53:04,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741301167] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:53:04,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:53:04,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:53:04,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122090101] [2023-08-03 16:53:04,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:53:04,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:53:04,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:53:04,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:53:04,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:53:04,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 102 [2023-08-03 16:53:04,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:04,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:53:04,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 102 [2023-08-03 16:53:04,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:53:04,679 INFO L124 PetriNetUnfolderBase]: 70/149 cut-off events. [2023-08-03 16:53:04,679 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-03 16:53:04,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 149 events. 70/149 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 545 event pairs, 6 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 113. Up to 85 conditions per place. [2023-08-03 16:53:04,683 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 17 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2023-08-03 16:53:04,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 112 flow [2023-08-03 16:53:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:53:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:53:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2023-08-03 16:53:04,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2023-08-03 16:53:04,688 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 230 transitions. [2023-08-03 16:53:04,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 230 transitions. [2023-08-03 16:53:04,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:53:04,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 230 transitions. [2023-08-03 16:53:04,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:04,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:04,693 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:04,694 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 54 flow. Second operand 4 states and 230 transitions. [2023-08-03 16:53:04,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 112 flow [2023-08-03 16:53:04,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:53:04,695 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 72 flow [2023-08-03 16:53:04,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-03 16:53:04,697 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2023-08-03 16:53:04,698 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 72 flow [2023-08-03 16:53:04,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:04,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:53:04,698 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:53:04,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:53:04,908 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 16:53:04,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:53:04,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:53:04,909 INFO L85 PathProgramCache]: Analyzing trace with hash 942155288, now seen corresponding path program 1 times [2023-08-03 16:53:04,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:53:04,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271791421] [2023-08-03 16:53:04,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:53:04,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:53:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:53:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:53:04,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:53:04,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271791421] [2023-08-03 16:53:04,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271791421] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:53:04,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123181663] [2023-08-03 16:53:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:53:04,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:53:04,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:53:04,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:53:05,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:53:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:53:05,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:53:05,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:53:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:53:05,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:53:05,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123181663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:53:05,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:53:05,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:53:05,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844133526] [2023-08-03 16:53:05,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:53:05,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:53:05,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:53:05,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:53:05,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:53:05,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 102 [2023-08-03 16:53:05,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:53:05,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 102 [2023-08-03 16:53:05,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:53:05,156 INFO L124 PetriNetUnfolderBase]: 58/122 cut-off events. [2023-08-03 16:53:05,156 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-08-03 16:53:05,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 122 events. 58/122 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 384 event pairs, 0 based on Foata normal form. 9/130 useless extension candidates. Maximal degree in co-relation 92. Up to 84 conditions per place. [2023-08-03 16:53:05,159 INFO L140 encePairwiseOnDemand]: 99/102 looper letters, 17 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-08-03 16:53:05,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 23 transitions, 118 flow [2023-08-03 16:53:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:53:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:53:05,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 281 transitions. [2023-08-03 16:53:05,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509803921568628 [2023-08-03 16:53:05,161 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 281 transitions. [2023-08-03 16:53:05,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 281 transitions. [2023-08-03 16:53:05,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:53:05,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 281 transitions. [2023-08-03 16:53:05,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,163 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,163 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 72 flow. Second operand 5 states and 281 transitions. [2023-08-03 16:53:05,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 23 transitions, 118 flow [2023-08-03 16:53:05,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 111 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:53:05,166 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 61 flow [2023-08-03 16:53:05,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-08-03 16:53:05,167 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2023-08-03 16:53:05,167 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 61 flow [2023-08-03 16:53:05,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:53:05,168 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:53:05,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:53:05,368 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 16:53:05,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:53:05,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:53:05,370 INFO L85 PathProgramCache]: Analyzing trace with hash -857950802, now seen corresponding path program 1 times [2023-08-03 16:53:05,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:53:05,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8232000] [2023-08-03 16:53:05,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:53:05,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:53:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:53:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:53:05,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:53:05,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8232000] [2023-08-03 16:53:05,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8232000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:53:05,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:53:05,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:53:05,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715942071] [2023-08-03 16:53:05,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:53:05,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:53:05,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:53:05,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:53:05,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:53:05,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 102 [2023-08-03 16:53:05,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:53:05,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 102 [2023-08-03 16:53:05,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:53:05,502 INFO L124 PetriNetUnfolderBase]: 110/215 cut-off events. [2023-08-03 16:53:05,502 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-08-03 16:53:05,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 215 events. 110/215 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 765 event pairs, 38 based on Foata normal form. 16/230 useless extension candidates. Maximal degree in co-relation 329. Up to 149 conditions per place. [2023-08-03 16:53:05,503 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 23 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2023-08-03 16:53:05,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 160 flow [2023-08-03 16:53:05,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:53:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:53:05,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2023-08-03 16:53:05,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2023-08-03 16:53:05,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2023-08-03 16:53:05,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2023-08-03 16:53:05,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:53:05,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2023-08-03 16:53:05,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,507 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 61 flow. Second operand 3 states and 182 transitions. [2023-08-03 16:53:05,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 160 flow [2023-08-03 16:53:05,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:53:05,508 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 86 flow [2023-08-03 16:53:05,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-08-03 16:53:05,509 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 8 predicate places. [2023-08-03 16:53:05,509 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 86 flow [2023-08-03 16:53:05,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:53:05,510 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:53:05,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:53:05,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:53:05,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:53:05,511 INFO L85 PathProgramCache]: Analyzing trace with hash -346196654, now seen corresponding path program 1 times [2023-08-03 16:53:05,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:53:05,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165858382] [2023-08-03 16:53:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:53:05,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:53:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:53:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:53:05,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:53:05,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165858382] [2023-08-03 16:53:05,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165858382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:53:05,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:53:05,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:53:05,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484776437] [2023-08-03 16:53:05,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:53:05,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:53:05,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:53:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:53:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:53:05,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2023-08-03 16:53:05,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:53:05,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2023-08-03 16:53:05,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:53:05,601 INFO L124 PetriNetUnfolderBase]: 38/116 cut-off events. [2023-08-03 16:53:05,601 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-03 16:53:05,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 116 events. 38/116 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 395 event pairs, 3 based on Foata normal form. 16/132 useless extension candidates. Maximal degree in co-relation 180. Up to 52 conditions per place. [2023-08-03 16:53:05,602 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 17 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2023-08-03 16:53:05,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 164 flow [2023-08-03 16:53:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:53:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:53:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2023-08-03 16:53:05,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2023-08-03 16:53:05,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2023-08-03 16:53:05,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2023-08-03 16:53:05,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:53:05,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2023-08-03 16:53:05,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,606 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 86 flow. Second operand 3 states and 182 transitions. [2023-08-03 16:53:05,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 164 flow [2023-08-03 16:53:05,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:53:05,607 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 92 flow [2023-08-03 16:53:05,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2023-08-03 16:53:05,608 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2023-08-03 16:53:05,608 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 92 flow [2023-08-03 16:53:05,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:53:05,609 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:53:05,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:53:05,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:53:05,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:53:05,609 INFO L85 PathProgramCache]: Analyzing trace with hash 142993184, now seen corresponding path program 2 times [2023-08-03 16:53:05,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:53:05,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386066861] [2023-08-03 16:53:05,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:53:05,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:53:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:53:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:53:05,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:53:05,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386066861] [2023-08-03 16:53:05,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386066861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:53:05,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:53:05,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:53:05,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955187157] [2023-08-03 16:53:05,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:53:05,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:53:05,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:53:05,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:53:05,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:53:05,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 102 [2023-08-03 16:53:05,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:53:05,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 102 [2023-08-03 16:53:05,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:53:05,699 INFO L124 PetriNetUnfolderBase]: 15/63 cut-off events. [2023-08-03 16:53:05,700 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-08-03 16:53:05,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 63 events. 15/63 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 177 event pairs, 13 based on Foata normal form. 8/70 useless extension candidates. Maximal degree in co-relation 145. Up to 42 conditions per place. [2023-08-03 16:53:05,701 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-03 16:53:05,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 18 transitions, 114 flow [2023-08-03 16:53:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:53:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:53:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2023-08-03 16:53:05,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571078431372549 [2023-08-03 16:53:05,702 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 233 transitions. [2023-08-03 16:53:05,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 233 transitions. [2023-08-03 16:53:05,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:53:05,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 233 transitions. [2023-08-03 16:53:05,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,704 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,704 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 92 flow. Second operand 4 states and 233 transitions. [2023-08-03 16:53:05,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 18 transitions, 114 flow [2023-08-03 16:53:05,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 18 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:53:05,707 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-03 16:53:05,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-03 16:53:05,708 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2023-08-03 16:53:05,709 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-03 16:53:05,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:53:05,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 16:53:05,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 16:53:05,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:53:05,709 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-03 16:53:05,712 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:53:05,712 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:53:05,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:53:05 BasicIcfg [2023-08-03 16:53:05,717 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:53:05,719 INFO L158 Benchmark]: Toolchain (without parser) took 5341.41ms. Allocated memory is still 530.6MB. Free memory was 473.6MB in the beginning and 323.1MB in the end (delta: 150.4MB). Peak memory consumption was 152.1MB. Max. memory is 16.0GB. [2023-08-03 16:53:05,719 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 356.5MB. Free memory is still 303.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:53:05,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.57ms. Allocated memory is still 530.6MB. Free memory was 473.6MB in the beginning and 453.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 16:53:05,721 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.79ms. Allocated memory is still 530.6MB. Free memory was 453.4MB in the beginning and 451.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:53:05,721 INFO L158 Benchmark]: Boogie Preprocessor took 20.22ms. Allocated memory is still 530.6MB. Free memory was 451.4MB in the beginning and 450.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:53:05,721 INFO L158 Benchmark]: RCFGBuilder took 453.51ms. Allocated memory is still 530.6MB. Free memory was 450.1MB in the beginning and 434.6MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 16:53:05,721 INFO L158 Benchmark]: TraceAbstraction took 4479.03ms. Allocated memory is still 530.6MB. Free memory was 433.8MB in the beginning and 323.1MB in the end (delta: 110.6MB). Peak memory consumption was 112.3MB. Max. memory is 16.0GB. [2023-08-03 16:53:05,722 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 356.5MB. Free memory is still 303.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 349.57ms. Allocated memory is still 530.6MB. Free memory was 473.6MB in the beginning and 453.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.79ms. Allocated memory is still 530.6MB. Free memory was 453.4MB in the beginning and 451.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.22ms. Allocated memory is still 530.6MB. Free memory was 451.4MB in the beginning and 450.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 453.51ms. Allocated memory is still 530.6MB. Free memory was 450.1MB in the beginning and 434.6MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 4479.03ms. Allocated memory is still 530.6MB. Free memory was 433.8MB in the beginning and 323.1MB in the end (delta: 110.6MB). Peak memory consumption was 112.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 47 PlacesBefore, 14 PlacesAfterwards, 45 TransitionsBefore, 11 TransitionsAfterwards, 276 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 35 TotalNumberOfCompositions, 504 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 296, independent: 250, independent conditional: 0, independent unconditional: 250, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 149, independent: 138, independent conditional: 0, independent unconditional: 138, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 296, independent: 112, independent conditional: 0, independent unconditional: 112, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 149, unknown conditional: 0, unknown unconditional: 149] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 56 PlacesBefore, 21 PlacesAfterwards, 52 TransitionsBefore, 16 TransitionsAfterwards, 636 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 1279 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 688, independent: 620, independent conditional: 0, independent unconditional: 620, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 319, independent: 300, independent conditional: 0, independent unconditional: 300, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 688, independent: 320, independent conditional: 0, independent unconditional: 320, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 319, unknown conditional: 0, unknown unconditional: 319] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 738]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 64 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 7 mSDtfsCounter, 28 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=35occurred 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, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 4 procedures, 71 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 211 IncrementalHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 1 mSDtfsCounter, 211 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=5, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 173 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 29/37 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:53:05,752 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...