/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-atomic_time_var_mutex_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:43:45,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:43:45,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:43:45,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:43:45,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:43:45,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:43:45,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:43:45,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:43:45,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:43:45,965 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:43:45,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:43:45,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:43:45,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:43:45,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:43:45,969 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:43:45,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:43:45,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:43:45,969 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:43:45,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:43:45,970 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:43:45,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:43:45,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:43:45,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:43:45,971 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:43:45,971 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:43:45,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:43:45,971 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:43:45,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:43:45,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:43:45,972 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:43:45,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:43:45,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:43:45,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:43:45,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:43:45,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:43:45,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:43:45,974 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:43:45,974 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:43:45,974 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:43:45,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:43:45,975 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:43:45,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:43:46,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:43:46,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:43:46,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:43:46,230 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:43:46,231 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:43:46,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-atomic_time_var_mutex_bound2.i [2023-08-04 04:43:47,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:43:47,682 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:43:47,682 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-atomic_time_var_mutex_bound2.i [2023-08-04 04:43:47,701 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351e2c79f/f67f4f6f37be4825b58bf5c75ca1bf66/FLAG96382af8a [2023-08-04 04:43:47,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351e2c79f/f67f4f6f37be4825b58bf5c75ca1bf66 [2023-08-04 04:43:47,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:43:47,718 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:43:47,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:43:47,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:43:47,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:43:47,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:43:47" (1/1) ... [2023-08-04 04:43:47,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9bce3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:47, skipping insertion in model container [2023-08-04 04:43:47,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:43:47" (1/1) ... [2023-08-04 04:43:47,763 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:43:48,021 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-atomic_time_var_mutex_bound2.i[30247,30260] [2023-08-04 04:43:48,024 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-atomic_time_var_mutex_bound2.i[30452,30465] [2023-08-04 04:43:48,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:43:48,061 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:43:48,088 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-04 04:43:48,090 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-04 04:43:48,100 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-atomic_time_var_mutex_bound2.i[30247,30260] [2023-08-04 04:43:48,101 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-atomic_time_var_mutex_bound2.i[30452,30465] [2023-08-04 04:43:48,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:43:48,136 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:43:48,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48 WrapperNode [2023-08-04 04:43:48,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:43:48,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:43:48,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:43:48,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:43:48,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (1/1) ... [2023-08-04 04:43:48,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (1/1) ... [2023-08-04 04:43:48,180 INFO L138 Inliner]: procedures = 169, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2023-08-04 04:43:48,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:43:48,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:43:48,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:43:48,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:43:48,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (1/1) ... [2023-08-04 04:43:48,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (1/1) ... [2023-08-04 04:43:48,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (1/1) ... [2023-08-04 04:43:48,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (1/1) ... [2023-08-04 04:43:48,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (1/1) ... [2023-08-04 04:43:48,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (1/1) ... [2023-08-04 04:43:48,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (1/1) ... [2023-08-04 04:43:48,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (1/1) ... [2023-08-04 04:43:48,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:43:48,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:43:48,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:43:48,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:43:48,240 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (1/1) ... [2023-08-04 04:43:48,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:43:48,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:43:48,270 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) [2023-08-04 04:43:48,281 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 [2023-08-04 04:43:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2023-08-04 04:43:48,303 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2023-08-04 04:43:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:43:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2023-08-04 04:43:48,303 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2023-08-04 04:43:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:43:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:43:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:43:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:43:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:43:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:43:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:43:48,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:43:48,306 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:43:48,417 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:43:48,418 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:43:48,673 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:43:48,680 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:43:48,680 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 04:43:48,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:43:48 BoogieIcfgContainer [2023-08-04 04:43:48,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:43:48,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:43:48,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:43:48,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:43:48,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:43:47" (1/3) ... [2023-08-04 04:43:48,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fef6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:43:48, skipping insertion in model container [2023-08-04 04:43:48,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:43:48" (2/3) ... [2023-08-04 04:43:48,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fef6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:43:48, skipping insertion in model container [2023-08-04 04:43:48,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:43:48" (3/3) ... [2023-08-04 04:43:48,690 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-atomic_time_var_mutex_bound2.i [2023-08-04 04:43:48,698 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:43:48,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:43:48,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 04:43:48,708 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:43:48,789 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-04 04:43:48,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:48,913 INFO L124 PetriNetUnfolderBase]: 29/243 cut-off events. [2023-08-04 04:43:48,914 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 04:43:48,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 243 events. 29/243 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 787 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2023-08-04 04:43:48,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:48,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:48,936 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:43:48,954 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:48,957 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:48,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:49,021 INFO L124 PetriNetUnfolderBase]: 29/243 cut-off events. [2023-08-04 04:43:49,021 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 04:43:49,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 243 events. 29/243 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 787 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2023-08-04 04:43:49,030 INFO L119 LiptonReduction]: Number of co-enabled transitions 3638 [2023-08-04 04:43:52,232 INFO L134 LiptonReduction]: Checked pairs total: 9586 [2023-08-04 04:43:52,233 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-04 04:43:52,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:43:52,270 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;@4c1908c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:43:52,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:43:52,280 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:43:52,281 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2023-08-04 04:43:52,281 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:43:52,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:43:52,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 04:43:52,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:43:52,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:43:52,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1136276115, now seen corresponding path program 1 times [2023-08-04 04:43:52,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:43:52,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560670695] [2023-08-04 04:43:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:43:52,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:43:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:43:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:43:52,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:43:52,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560670695] [2023-08-04 04:43:52,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560670695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:43:52,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:43:52,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:43:52,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173353339] [2023-08-04 04:43:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:43:52,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:43:52,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:43:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:43:52,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:43:52,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 227 [2023-08-04 04:43:52,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2023-08-04 04:43:52,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:43:52,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 227 [2023-08-04 04:43:52,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:43:52,767 INFO L124 PetriNetUnfolderBase]: 620/1274 cut-off events. [2023-08-04 04:43:52,768 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-04 04:43:52,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 1274 events. 620/1274 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7806 event pairs, 260 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 1996. Up to 551 conditions per place. [2023-08-04 04:43:52,778 INFO L140 encePairwiseOnDemand]: 223/227 looper letters, 46 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-04 04:43:52,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 58 transitions, 243 flow [2023-08-04 04:43:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:43:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:43:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-08-04 04:43:52,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5447870778267254 [2023-08-04 04:43:52,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-08-04 04:43:52,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-08-04 04:43:52,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:43:52,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-08-04 04:43:52,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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) [2023-08-04 04:43:52,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-04 04:43:52,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-04 04:43:52,818 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 104 flow. Second operand 3 states and 371 transitions. [2023-08-04 04:43:52,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 58 transitions, 243 flow [2023-08-04 04:43:52,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 243 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:43:52,826 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 104 flow [2023-08-04 04:43:52,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-04 04:43:52,830 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-04 04:43:52,830 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 104 flow [2023-08-04 04:43:52,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2023-08-04 04:43:52,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:43:52,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:43:52,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:43:52,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:43:52,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:43:52,832 INFO L85 PathProgramCache]: Analyzing trace with hash -277640991, now seen corresponding path program 1 times [2023-08-04 04:43:52,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:43:52,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5575542] [2023-08-04 04:43:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:43:52,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:43:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:43:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:43:52,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:43:52,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5575542] [2023-08-04 04:43:52,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5575542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:43:52,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:43:52,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:43:52,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073091377] [2023-08-04 04:43:52,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:43:52,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:43:52,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:43:52,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:43:52,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:43:52,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 227 [2023-08-04 04:43:52,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2023-08-04 04:43:52,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:43:52,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 227 [2023-08-04 04:43:52,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:43:53,103 INFO L124 PetriNetUnfolderBase]: 529/1119 cut-off events. [2023-08-04 04:43:53,104 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 04:43:53,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2123 conditions, 1119 events. 529/1119 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6866 event pairs, 174 based on Foata normal form. 0/856 useless extension candidates. Maximal degree in co-relation 1902. Up to 887 conditions per place. [2023-08-04 04:43:53,110 INFO L140 encePairwiseOnDemand]: 224/227 looper letters, 34 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-04 04:43:53,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 192 flow [2023-08-04 04:43:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:43:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:43:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-04 04:43:53,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256975036710719 [2023-08-04 04:43:53,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-04 04:43:53,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-04 04:43:53,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:43:53,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-04 04:43:53,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:43:53,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-04 04:43:53,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-04 04:43:53,116 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 104 flow. Second operand 3 states and 358 transitions. [2023-08-04 04:43:53,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 192 flow [2023-08-04 04:43:53,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:43:53,119 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 108 flow [2023-08-04 04:43:53,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-04 04:43:53,120 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-04 04:43:53,120 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 108 flow [2023-08-04 04:43:53,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2023-08-04 04:43:53,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:43:53,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:43:53,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:43:53,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:43:53,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:43:53,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2132217399, now seen corresponding path program 1 times [2023-08-04 04:43:53,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:43:53,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913526640] [2023-08-04 04:43:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:43:53,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:43:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:43:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:43:53,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:43:53,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913526640] [2023-08-04 04:43:53,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913526640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:43:53,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:43:53,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:43:53,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733706544] [2023-08-04 04:43:53,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:43:53,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:43:53,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:43:53,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:43:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:43:53,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 227 [2023-08-04 04:43:53,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2023-08-04 04:43:53,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:43:53,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 227 [2023-08-04 04:43:53,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:43:53,405 INFO L124 PetriNetUnfolderBase]: 944/1801 cut-off events. [2023-08-04 04:43:53,405 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-04 04:43:53,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3539 conditions, 1801 events. 944/1801 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10150 event pairs, 507 based on Foata normal form. 0/1394 useless extension candidates. Maximal degree in co-relation 3161. Up to 1087 conditions per place. [2023-08-04 04:43:53,414 INFO L140 encePairwiseOnDemand]: 222/227 looper letters, 48 selfloop transitions, 3 changer transitions 5/62 dead transitions. [2023-08-04 04:43:53,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 62 transitions, 284 flow [2023-08-04 04:43:53,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:43:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:43:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-08-04 04:43:53,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462555066079295 [2023-08-04 04:43:53,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-08-04 04:43:53,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-08-04 04:43:53,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:43:53,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-08-04 04:43:53,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 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) [2023-08-04 04:43:53,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-04 04:43:53,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-04 04:43:53,421 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 108 flow. Second operand 3 states and 372 transitions. [2023-08-04 04:43:53,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 62 transitions, 284 flow [2023-08-04 04:43:53,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:43:53,426 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 124 flow [2023-08-04 04:43:53,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-04 04:43:53,428 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-04 04:43:53,428 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 124 flow [2023-08-04 04:43:53,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2023-08-04 04:43:53,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:43:53,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:43:53,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:43:53,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:43:53,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:43:53,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2076285791, now seen corresponding path program 1 times [2023-08-04 04:43:53,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:43:53,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577385282] [2023-08-04 04:43:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:43:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:43:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:43:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:43:53,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:43:53,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577385282] [2023-08-04 04:43:53,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577385282] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:43:53,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837098911] [2023-08-04 04:43:53,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:43:53,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:43:53,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:43:53,531 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) [2023-08-04 04:43:53,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:43:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:43:53,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:43:53,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:43:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:43:53,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:43:53,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837098911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:43:53,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:43:53,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 04:43:53,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826683562] [2023-08-04 04:43:53,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:43:53,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:43:53,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:43:53,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:43:53,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:43:53,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 227 [2023-08-04 04:43:53,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2023-08-04 04:43:53,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:43:53,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 227 [2023-08-04 04:43:53,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:43:53,853 INFO L124 PetriNetUnfolderBase]: 754/1513 cut-off events. [2023-08-04 04:43:53,854 INFO L125 PetriNetUnfolderBase]: For 414/428 co-relation queries the response was YES. [2023-08-04 04:43:53,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 1513 events. 754/1513 cut-off events. For 414/428 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8559 event pairs, 423 based on Foata normal form. 122/1381 useless extension candidates. Maximal degree in co-relation 2962. Up to 888 conditions per place. [2023-08-04 04:43:53,860 INFO L140 encePairwiseOnDemand]: 222/227 looper letters, 43 selfloop transitions, 3 changer transitions 7/59 dead transitions. [2023-08-04 04:43:53,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 282 flow [2023-08-04 04:43:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:43:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:43:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-08-04 04:43:53,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433186490455213 [2023-08-04 04:43:53,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-08-04 04:43:53,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-08-04 04:43:53,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:43:53,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-08-04 04:43:53,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2023-08-04 04:43:53,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-04 04:43:53,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-04 04:43:53,865 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 124 flow. Second operand 3 states and 370 transitions. [2023-08-04 04:43:53,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 282 flow [2023-08-04 04:43:53,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 273 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:43:53,869 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 122 flow [2023-08-04 04:43:53,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-08-04 04:43:53,869 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-04 04:43:53,870 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 122 flow [2023-08-04 04:43:53,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2023-08-04 04:43:53,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:43:53,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:43:53,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:43:54,076 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 [2023-08-04 04:43:54,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:43:54,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:43:54,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1761565052, now seen corresponding path program 1 times [2023-08-04 04:43:54,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:43:54,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958543241] [2023-08-04 04:43:54,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:43:54,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:43:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:43:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:43:54,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:43:54,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958543241] [2023-08-04 04:43:54,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958543241] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:43:54,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232880616] [2023-08-04 04:43:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:43:54,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:43:54,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:43:54,157 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) [2023-08-04 04:43:54,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:43:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:43:54,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 04:43:54,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:43:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:43:54,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:43:54,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232880616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:43:54,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:43:54,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 04:43:54,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042432165] [2023-08-04 04:43:54,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:43:54,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:43:54,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:43:54,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:43:54,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:43:54,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 227 [2023-08-04 04:43:54,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2023-08-04 04:43:54,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:43:54,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 227 [2023-08-04 04:43:54,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:43:54,418 INFO L124 PetriNetUnfolderBase]: 611/1376 cut-off events. [2023-08-04 04:43:54,418 INFO L125 PetriNetUnfolderBase]: For 198/213 co-relation queries the response was YES. [2023-08-04 04:43:54,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2996 conditions, 1376 events. 611/1376 cut-off events. For 198/213 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8643 event pairs, 235 based on Foata normal form. 38/1210 useless extension candidates. Maximal degree in co-relation 2328. Up to 785 conditions per place. [2023-08-04 04:43:54,423 INFO L140 encePairwiseOnDemand]: 225/227 looper letters, 37 selfloop transitions, 1 changer transitions 10/57 dead transitions. [2023-08-04 04:43:54,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 268 flow [2023-08-04 04:43:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:43:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:43:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-08-04 04:43:54,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477239353891337 [2023-08-04 04:43:54,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-08-04 04:43:54,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-08-04 04:43:54,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:43:54,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-08-04 04:43:54,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2023-08-04 04:43:54,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-04 04:43:54,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-04 04:43:54,429 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 122 flow. Second operand 3 states and 373 transitions. [2023-08-04 04:43:54,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 268 flow [2023-08-04 04:43:54,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:43:54,432 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 121 flow [2023-08-04 04:43:54,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-04 04:43:54,435 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-04 04:43:54,435 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 121 flow [2023-08-04 04:43:54,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2023-08-04 04:43:54,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:43:54,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:43:54,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 04:43:54,640 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 [2023-08-04 04:43:54,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:43:54,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:43:54,641 INFO L85 PathProgramCache]: Analyzing trace with hash -194478650, now seen corresponding path program 2 times [2023-08-04 04:43:54,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:43:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383425956] [2023-08-04 04:43:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:43:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:43:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:43:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:43:54,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:43:54,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383425956] [2023-08-04 04:43:54,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383425956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:43:54,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394559958] [2023-08-04 04:43:54,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:43:54,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:43:54,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:43:54,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:43:54,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:43:54,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 04:43:54,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:43:54,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:43:54,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:43:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:43:54,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:43:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:43:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394559958] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:43:54,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:43:54,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-04 04:43:54,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163179081] [2023-08-04 04:43:54,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:43:54,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:43:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:43:54,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:43:54,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:43:54,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 227 [2023-08-04 04:43:54,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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) [2023-08-04 04:43:54,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:43:54,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 227 [2023-08-04 04:43:54,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:43:54,898 INFO L124 PetriNetUnfolderBase]: 10/32 cut-off events. [2023-08-04 04:43:54,898 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-08-04 04:43:54,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 32 events. 10/32 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 7/38 useless extension candidates. Maximal degree in co-relation 75. Up to 22 conditions per place. [2023-08-04 04:43:54,899 INFO L140 encePairwiseOnDemand]: 224/227 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-08-04 04:43:54,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 80 flow [2023-08-04 04:43:54,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:43:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:43:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2023-08-04 04:43:54,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845814977973568 [2023-08-04 04:43:54,901 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 440 transitions. [2023-08-04 04:43:54,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 440 transitions. [2023-08-04 04:43:54,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:43:54,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 440 transitions. [2023-08-04 04:43:54,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2023-08-04 04:43:54,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 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) [2023-08-04 04:43:54,904 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 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) [2023-08-04 04:43:54,904 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 121 flow. Second operand 4 states and 440 transitions. [2023-08-04 04:43:54,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 80 flow [2023-08-04 04:43:54,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 68 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-04 04:43:54,905 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 04:43:54,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-04 04:43:54,907 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -21 predicate places. [2023-08-04 04:43:54,907 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 04:43:54,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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) [2023-08-04 04:43:54,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:43:54,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:43:54,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:43:54,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:43:54,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 04:43:55,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:43:55,125 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-04 04:43:55,127 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:43:55,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:55,150 INFO L124 PetriNetUnfolderBase]: 29/243 cut-off events. [2023-08-04 04:43:55,150 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 04:43:55,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 243 events. 29/243 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 787 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2023-08-04 04:43:55,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:55,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:55,152 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:43:55,153 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:55,153 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:55,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 274 flow [2023-08-04 04:43:55,171 INFO L124 PetriNetUnfolderBase]: 29/243 cut-off events. [2023-08-04 04:43:55,172 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 04:43:55,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 243 events. 29/243 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 787 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2023-08-04 04:43:55,175 INFO L119 LiptonReduction]: Number of co-enabled transitions 3638 [2023-08-04 04:43:58,093 INFO L134 LiptonReduction]: Checked pairs total: 8714 [2023-08-04 04:43:58,093 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-04 04:43:58,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:43:58,096 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;@4c1908c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:43:58,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:43:58,099 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:43:58,099 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2023-08-04 04:43:58,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:43:58,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:43:58,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:43:58,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:43:58,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:43:58,100 INFO L85 PathProgramCache]: Analyzing trace with hash -282692492, now seen corresponding path program 1 times [2023-08-04 04:43:58,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:43:58,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729384513] [2023-08-04 04:43:58,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:43:58,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:43:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:43:58,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:43:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:43:58,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:43:58,160 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:43:58,160 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 04:43:58,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 04:43:58,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:43:58,161 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:43:58,162 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-04 04:43:58,163 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:43:58,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:43:58,199 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-04 04:43:58,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 165 transitions, 378 flow [2023-08-04 04:43:58,278 INFO L124 PetriNetUnfolderBase]: 118/735 cut-off events. [2023-08-04 04:43:58,278 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-04 04:43:58,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 735 events. 118/735 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3658 event pairs, 2 based on Foata normal form. 0/622 useless extension candidates. Maximal degree in co-relation 448. Up to 32 conditions per place. [2023-08-04 04:43:58,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 165 transitions, 378 flow [2023-08-04 04:43:58,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 165 transitions, 378 flow [2023-08-04 04:43:58,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:43:58,287 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 165 transitions, 378 flow [2023-08-04 04:43:58,287 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 165 transitions, 378 flow [2023-08-04 04:43:58,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 165 transitions, 378 flow [2023-08-04 04:43:58,347 INFO L124 PetriNetUnfolderBase]: 118/735 cut-off events. [2023-08-04 04:43:58,348 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-04 04:43:58,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 735 events. 118/735 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3658 event pairs, 2 based on Foata normal form. 0/622 useless extension candidates. Maximal degree in co-relation 448. Up to 32 conditions per place. [2023-08-04 04:43:58,369 INFO L119 LiptonReduction]: Number of co-enabled transitions 10124 [2023-08-04 04:44:01,216 INFO L134 LiptonReduction]: Checked pairs total: 45426 [2023-08-04 04:44:01,217 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-04 04:44:01,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:44:01,219 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;@4c1908c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:44:01,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-04 04:44:01,222 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:44:01,222 INFO L124 PetriNetUnfolderBase]: 3/38 cut-off events. [2023-08-04 04:44:01,222 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:44:01,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:44:01,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:44:01,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:44:01,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:44:01,223 INFO L85 PathProgramCache]: Analyzing trace with hash 931517626, now seen corresponding path program 1 times [2023-08-04 04:44:01,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:44:01,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500217302] [2023-08-04 04:44:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:44:01,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:44:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:44:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:44:01,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:44:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500217302] [2023-08-04 04:44:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500217302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:44:01,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:44:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:44:01,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897725475] [2023-08-04 04:44:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:44:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:44:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:44:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:44:01,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:44:01,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 283 [2023-08-04 04:44:01,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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) [2023-08-04 04:44:01,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:44:01,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 283 [2023-08-04 04:44:01,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:44:08,749 INFO L124 PetriNetUnfolderBase]: 69932/109822 cut-off events. [2023-08-04 04:44:08,750 INFO L125 PetriNetUnfolderBase]: For 8474/8474 co-relation queries the response was YES. [2023-08-04 04:44:08,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207792 conditions, 109822 events. 69932/109822 cut-off events. For 8474/8474 co-relation queries the response was YES. Maximal size of possible extension queue 4458. Compared 974794 event pairs, 26539 based on Foata normal form. 7777/101864 useless extension candidates. Maximal degree in co-relation 104925. Up to 55023 conditions per place. [2023-08-04 04:44:09,491 INFO L140 encePairwiseOnDemand]: 272/283 looper letters, 85 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2023-08-04 04:44:09,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 110 transitions, 485 flow [2023-08-04 04:44:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:44:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:44:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-04 04:44:09,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877502944640753 [2023-08-04 04:44:09,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-04 04:44:09,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-04 04:44:09,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:44:09,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-04 04:44:09,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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) [2023-08-04 04:44:09,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:44:09,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:44:09,498 INFO L175 Difference]: Start difference. First operand has 66 places, 73 transitions, 194 flow. Second operand 3 states and 499 transitions. [2023-08-04 04:44:09,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 110 transitions, 485 flow [2023-08-04 04:44:09,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 110 transitions, 485 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:44:09,667 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 222 flow [2023-08-04 04:44:09,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2023-08-04 04:44:09,668 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2023-08-04 04:44:09,669 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 222 flow [2023-08-04 04:44:09,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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) [2023-08-04 04:44:09,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:44:09,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:44:09,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:44:09,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:44:09,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:44:09,670 INFO L85 PathProgramCache]: Analyzing trace with hash -397520319, now seen corresponding path program 1 times [2023-08-04 04:44:09,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:44:09,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858447652] [2023-08-04 04:44:09,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:44:09,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:44:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:44:09,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:44:09,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:44:09,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858447652] [2023-08-04 04:44:09,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858447652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:44:09,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:44:09,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:44:09,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761790934] [2023-08-04 04:44:09,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:44:09,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:44:09,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:44:09,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:44:09,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:44:09,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 283 [2023-08-04 04:44:09,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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) [2023-08-04 04:44:09,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:44:09,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 283 [2023-08-04 04:44:09,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:44:15,630 INFO L124 PetriNetUnfolderBase]: 55207/87587 cut-off events. [2023-08-04 04:44:15,630 INFO L125 PetriNetUnfolderBase]: For 12685/12685 co-relation queries the response was YES. [2023-08-04 04:44:15,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169451 conditions, 87587 events. 55207/87587 cut-off events. For 12685/12685 co-relation queries the response was YES. Maximal size of possible extension queue 4961. Compared 817256 event pairs, 46892 based on Foata normal form. 0/73495 useless extension candidates. Maximal degree in co-relation 60378. Up to 71211 conditions per place. [2023-08-04 04:44:16,274 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 48 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-04 04:44:16,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 334 flow [2023-08-04 04:44:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:44:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:44:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-04 04:44:16,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394581861012956 [2023-08-04 04:44:16,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-04 04:44:16,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-04 04:44:16,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:44:16,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-04 04:44:16,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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) [2023-08-04 04:44:16,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:44:16,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:44:16,287 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 222 flow. Second operand 3 states and 458 transitions. [2023-08-04 04:44:16,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 334 flow [2023-08-04 04:44:16,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:44:16,388 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 224 flow [2023-08-04 04:44:16,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2023-08-04 04:44:16,389 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-04 04:44:16,389 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 224 flow [2023-08-04 04:44:16,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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) [2023-08-04 04:44:16,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:44:16,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:44:16,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:44:16,390 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:44:16,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:44:16,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1852007403, now seen corresponding path program 1 times [2023-08-04 04:44:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:44:16,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540545752] [2023-08-04 04:44:16,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:44:16,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:44:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:44:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:44:16,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:44:16,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540545752] [2023-08-04 04:44:16,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540545752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:44:16,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:44:16,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:44:16,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589307531] [2023-08-04 04:44:16,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:44:16,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:44:16,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:44:16,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:44:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:44:16,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 283 [2023-08-04 04:44:16,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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) [2023-08-04 04:44:16,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:44:16,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 283 [2023-08-04 04:44:16,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:44:34,068 INFO L124 PetriNetUnfolderBase]: 214389/299704 cut-off events. [2023-08-04 04:44:34,068 INFO L125 PetriNetUnfolderBase]: For 29127/29129 co-relation queries the response was YES. [2023-08-04 04:44:34,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611163 conditions, 299704 events. 214389/299704 cut-off events. For 29127/29129 co-relation queries the response was YES. Maximal size of possible extension queue 10374. Compared 2351602 event pairs, 93745 based on Foata normal form. 0/236047 useless extension candidates. Maximal degree in co-relation 611103. Up to 162298 conditions per place. [2023-08-04 04:44:35,834 INFO L140 encePairwiseOnDemand]: 273/283 looper letters, 93 selfloop transitions, 6 changer transitions 1/118 dead transitions. [2023-08-04 04:44:35,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 118 transitions, 562 flow [2023-08-04 04:44:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:44:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:44:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-04 04:44:35,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736160188457008 [2023-08-04 04:44:35,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-04 04:44:35,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-04 04:44:35,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:44:35,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-04 04:44:35,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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) [2023-08-04 04:44:35,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:44:35,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:44:35,841 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 224 flow. Second operand 3 states and 487 transitions. [2023-08-04 04:44:35,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 118 transitions, 562 flow [2023-08-04 04:44:35,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 118 transitions, 559 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:44:35,980 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 272 flow [2023-08-04 04:44:35,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2023-08-04 04:44:35,981 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2023-08-04 04:44:35,981 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 272 flow [2023-08-04 04:44:35,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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) [2023-08-04 04:44:35,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:44:35,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:44:35,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 04:44:35,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:44:35,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:44:35,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2071261329, now seen corresponding path program 1 times [2023-08-04 04:44:35,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:44:35,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570463382] [2023-08-04 04:44:35,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:44:35,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:44:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:44:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:44:36,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:44:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570463382] [2023-08-04 04:44:36,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570463382] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:44:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198426163] [2023-08-04 04:44:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:44:36,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:44:36,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:44:36,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:44:36,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 04:44:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:44:36,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:44:36,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:44:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:44:36,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:44:36,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198426163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:44:36,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:44:36,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 04:44:36,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452433466] [2023-08-04 04:44:36,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:44:36,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:44:36,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:44:36,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:44:36,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:44:36,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 283 [2023-08-04 04:44:36,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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) [2023-08-04 04:44:36,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:44:36,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 283 [2023-08-04 04:44:36,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:44:51,248 INFO L124 PetriNetUnfolderBase]: 173400/249112 cut-off events. [2023-08-04 04:44:51,248 INFO L125 PetriNetUnfolderBase]: For 92550/93428 co-relation queries the response was YES. [2023-08-04 04:44:52,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581744 conditions, 249112 events. 173400/249112 cut-off events. For 92550/93428 co-relation queries the response was YES. Maximal size of possible extension queue 8704. Compared 2027285 event pairs, 79706 based on Foata normal form. 20524/232858 useless extension candidates. Maximal degree in co-relation 407989. Up to 130638 conditions per place. [2023-08-04 04:44:52,979 INFO L140 encePairwiseOnDemand]: 274/283 looper letters, 90 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2023-08-04 04:44:52,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 113 transitions, 573 flow [2023-08-04 04:44:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:44:52,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:44:52,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-04 04:44:52,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.568904593639576 [2023-08-04 04:44:52,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-04 04:44:52,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-04 04:44:52,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:44:52,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-04 04:44:52,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2023-08-04 04:44:52,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:44:52,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:44:52,989 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 272 flow. Second operand 3 states and 483 transitions. [2023-08-04 04:44:52,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 113 transitions, 573 flow [2023-08-04 04:44:54,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 113 transitions, 559 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:44:54,371 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 268 flow [2023-08-04 04:44:54,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2023-08-04 04:44:54,372 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2023-08-04 04:44:54,372 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 268 flow [2023-08-04 04:44:54,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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) [2023-08-04 04:44:54,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:44:54,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:44:54,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 04:44:54,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:44:54,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:44:54,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:44:54,574 INFO L85 PathProgramCache]: Analyzing trace with hash 989744850, now seen corresponding path program 1 times [2023-08-04 04:44:54,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:44:54,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686408957] [2023-08-04 04:44:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:44:54,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:44:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:44:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:44:54,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:44:54,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686408957] [2023-08-04 04:44:54,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686408957] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:44:54,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888476919] [2023-08-04 04:44:54,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:44:54,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:44:54,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:44:54,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:44:54,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 04:44:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:44:54,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 04:44:54,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:44:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:44:54,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:44:54,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888476919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:44:54,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:44:54,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 04:44:54,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755941477] [2023-08-04 04:44:54,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:44:54,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:44:54,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:44:54,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:44:54,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:44:54,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 283 [2023-08-04 04:44:54,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-08-04 04:44:54,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:44:54,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 283 [2023-08-04 04:44:54,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:45:06,948 INFO L124 PetriNetUnfolderBase]: 118848/200184 cut-off events. [2023-08-04 04:45:06,949 INFO L125 PetriNetUnfolderBase]: For 49599/58346 co-relation queries the response was YES. [2023-08-04 04:45:07,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438223 conditions, 200184 events. 118848/200184 cut-off events. For 49599/58346 co-relation queries the response was YES. Maximal size of possible extension queue 9539. Compared 2098803 event pairs, 42345 based on Foata normal form. 8499/180282 useless extension candidates. Maximal degree in co-relation 382922. Up to 145070 conditions per place. [2023-08-04 04:45:08,304 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 70 selfloop transitions, 2 changer transitions 6/106 dead transitions. [2023-08-04 04:45:08,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 106 transitions, 518 flow [2023-08-04 04:45:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:45:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:45:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-04 04:45:08,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677267373380448 [2023-08-04 04:45:08,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-04 04:45:08,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-04 04:45:08,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:45:08,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-04 04:45:08,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2023-08-04 04:45:08,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:45:08,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:45:08,309 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 268 flow. Second operand 3 states and 482 transitions. [2023-08-04 04:45:08,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 106 transitions, 518 flow [2023-08-04 04:45:08,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 106 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:45:08,393 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 283 flow [2023-08-04 04:45:08,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2023-08-04 04:45:08,394 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2023-08-04 04:45:08,394 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 283 flow [2023-08-04 04:45:08,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-08-04 04:45:08,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:45:08,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:45:08,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 04:45:08,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-04 04:45:08,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:45:08,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:45:08,595 INFO L85 PathProgramCache]: Analyzing trace with hash 675683084, now seen corresponding path program 2 times [2023-08-04 04:45:08,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:45:08,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640807595] [2023-08-04 04:45:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:45:08,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:45:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:45:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:45:08,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:45:08,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640807595] [2023-08-04 04:45:08,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640807595] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:45:08,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480881603] [2023-08-04 04:45:08,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:45:08,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:45:08,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:45:08,659 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:45:08,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 04:45:08,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-04 04:45:08,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:45:08,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-04 04:45:08,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:45:08,778 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-04 04:45:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:45:08,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:45:08,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480881603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:45:08,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:45:08,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 04:45:08,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897872514] [2023-08-04 04:45:08,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:45:08,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:45:08,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:45:08,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:45:08,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:45:08,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 283 [2023-08-04 04:45:08,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-08-04 04:45:08,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:45:08,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 283 [2023-08-04 04:45:08,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:45:11,808 INFO L124 PetriNetUnfolderBase]: 30184/51142 cut-off events. [2023-08-04 04:45:11,808 INFO L125 PetriNetUnfolderBase]: For 9668/11939 co-relation queries the response was YES. [2023-08-04 04:45:11,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107792 conditions, 51142 events. 30184/51142 cut-off events. For 9668/11939 co-relation queries the response was YES. Maximal size of possible extension queue 1998. Compared 457533 event pairs, 12959 based on Foata normal form. 7228/51672 useless extension candidates. Maximal degree in co-relation 55328. Up to 24376 conditions per place. [2023-08-04 04:45:11,965 INFO L140 encePairwiseOnDemand]: 273/283 looper letters, 0 selfloop transitions, 0 changer transitions 108/108 dead transitions. [2023-08-04 04:45:11,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 108 transitions, 541 flow [2023-08-04 04:45:11,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:45:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:45:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-04 04:45:11,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441696113074205 [2023-08-04 04:45:11,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-04 04:45:11,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-04 04:45:11,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:45:11,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-04 04:45:11,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2023-08-04 04:45:11,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:45:11,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:45:11,970 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 283 flow. Second operand 3 states and 462 transitions. [2023-08-04 04:45:11,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 108 transitions, 541 flow [2023-08-04 04:45:12,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 108 transitions, 528 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-04 04:45:12,057 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2023-08-04 04:45:12,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2023-08-04 04:45:12,058 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 4 predicate places. [2023-08-04 04:45:12,058 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2023-08-04 04:45:12,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-08-04 04:45:12,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-04 04:45:12,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-04 04:45:12,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-04 04:45:12,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-04 04:45:12,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-04 04:45:12,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-04 04:45:12,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 04:45:12,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:45:12,267 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-04 04:45:12,267 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:45:12,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 165 transitions, 378 flow [2023-08-04 04:45:12,313 INFO L124 PetriNetUnfolderBase]: 118/735 cut-off events. [2023-08-04 04:45:12,313 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-04 04:45:12,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 735 events. 118/735 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3658 event pairs, 2 based on Foata normal form. 0/622 useless extension candidates. Maximal degree in co-relation 448. Up to 32 conditions per place. [2023-08-04 04:45:12,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 165 transitions, 378 flow [2023-08-04 04:45:12,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 165 transitions, 378 flow [2023-08-04 04:45:12,320 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:45:12,320 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 165 transitions, 378 flow [2023-08-04 04:45:12,320 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 165 transitions, 378 flow [2023-08-04 04:45:12,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 165 transitions, 378 flow [2023-08-04 04:45:12,359 INFO L124 PetriNetUnfolderBase]: 118/735 cut-off events. [2023-08-04 04:45:12,359 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-04 04:45:12,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 735 events. 118/735 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3658 event pairs, 2 based on Foata normal form. 0/622 useless extension candidates. Maximal degree in co-relation 448. Up to 32 conditions per place. [2023-08-04 04:45:12,371 INFO L119 LiptonReduction]: Number of co-enabled transitions 10124 [2023-08-04 04:45:14,991 INFO L134 LiptonReduction]: Checked pairs total: 45438 [2023-08-04 04:45:14,991 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-04 04:45:14,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:45:14,993 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;@4c1908c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:45:14,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:45:14,998 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:45:14,998 INFO L124 PetriNetUnfolderBase]: 10/90 cut-off events. [2023-08-04 04:45:14,998 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 04:45:14,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:45:14,998 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:45:14,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:45:14,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:45:14,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1951682367, now seen corresponding path program 1 times [2023-08-04 04:45:14,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:45:14,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905091992] [2023-08-04 04:45:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:45:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:45:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:45:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:45:15,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:45:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905091992] [2023-08-04 04:45:15,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905091992] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:45:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620573180] [2023-08-04 04:45:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:45:15,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:45:15,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:45:15,045 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:45:15,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 04:45:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:45:15,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:45:15,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:45:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:45:15,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:45:15,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620573180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:45:15,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:45:15,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:45:15,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976524622] [2023-08-04 04:45:15,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:45:15,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:45:15,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:45:15,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:45:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:45:15,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 283 [2023-08-04 04:45:15,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 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) [2023-08-04 04:45:15,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:45:15,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 283 [2023-08-04 04:45:15,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:45:18,625 INFO L124 PetriNetUnfolderBase]: 40841/63257 cut-off events. [2023-08-04 04:45:18,625 INFO L125 PetriNetUnfolderBase]: For 4701/4701 co-relation queries the response was YES. [2023-08-04 04:45:18,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119202 conditions, 63257 events. 40841/63257 cut-off events. For 4701/4701 co-relation queries the response was YES. Maximal size of possible extension queue 3498. Compared 564193 event pairs, 18860 based on Foata normal form. 4685/57381 useless extension candidates. Maximal degree in co-relation 27880. Up to 52390 conditions per place. [2023-08-04 04:45:18,897 INFO L140 encePairwiseOnDemand]: 275/283 looper letters, 56 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2023-08-04 04:45:18,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 84 transitions, 334 flow [2023-08-04 04:45:18,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:45:18,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:45:18,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 744 transitions. [2023-08-04 04:45:18,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257950530035336 [2023-08-04 04:45:18,899 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 744 transitions. [2023-08-04 04:45:18,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 744 transitions. [2023-08-04 04:45:18,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:45:18,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 744 transitions. [2023-08-04 04:45:18,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 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) [2023-08-04 04:45:18,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 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) [2023-08-04 04:45:18,903 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 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) [2023-08-04 04:45:18,903 INFO L175 Difference]: Start difference. First operand has 66 places, 73 transitions, 194 flow. Second operand 5 states and 744 transitions. [2023-08-04 04:45:18,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 84 transitions, 334 flow [2023-08-04 04:45:18,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 84 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:45:18,907 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 193 flow [2023-08-04 04:45:18,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2023-08-04 04:45:18,907 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2023-08-04 04:45:18,907 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 193 flow [2023-08-04 04:45:18,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 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) [2023-08-04 04:45:18,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:45:18,908 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 04:45:18,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 04:45:19,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:45:19,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:45:19,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:45:19,114 INFO L85 PathProgramCache]: Analyzing trace with hash 255467323, now seen corresponding path program 1 times [2023-08-04 04:45:19,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:45:19,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962502650] [2023-08-04 04:45:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:45:19,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:45:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:45:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 04:45:19,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:45:19,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962502650] [2023-08-04 04:45:19,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962502650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:45:19,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:45:19,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:45:19,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364178932] [2023-08-04 04:45:19,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:45:19,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:45:19,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:45:19,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:45:19,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:45:19,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 283 [2023-08-04 04:45:19,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2023-08-04 04:45:19,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:45:19,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 283 [2023-08-04 04:45:19,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:45:22,540 INFO L124 PetriNetUnfolderBase]: 45600/68208 cut-off events. [2023-08-04 04:45:22,541 INFO L125 PetriNetUnfolderBase]: For 4194/4194 co-relation queries the response was YES. [2023-08-04 04:45:22,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128307 conditions, 68208 events. 45600/68208 cut-off events. For 4194/4194 co-relation queries the response was YES. Maximal size of possible extension queue 3443. Compared 562339 event pairs, 34363 based on Foata normal form. 1/57626 useless extension candidates. Maximal degree in co-relation 27953. Up to 56995 conditions per place. [2023-08-04 04:45:22,856 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 48 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-04 04:45:22,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 300 flow [2023-08-04 04:45:22,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:45:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:45:22,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-04 04:45:22,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394581861012956 [2023-08-04 04:45:22,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-04 04:45:22,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-04 04:45:22,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:45:22,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-04 04:45:22,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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) [2023-08-04 04:45:22,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:45:22,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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) [2023-08-04 04:45:22,861 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 193 flow. Second operand 3 states and 458 transitions. [2023-08-04 04:45:22,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 300 flow [2023-08-04 04:45:22,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:45:22,863 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 191 flow [2023-08-04 04:45:22,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2023-08-04 04:45:22,864 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 1 predicate places. [2023-08-04 04:45:22,864 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 191 flow [2023-08-04 04:45:22,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2023-08-04 04:45:22,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:45:22,864 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:45:22,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-04 04:45:22,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:45:22,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:45:22,865 INFO L85 PathProgramCache]: Analyzing trace with hash -32106329, now seen corresponding path program 1 times [2023-08-04 04:45:22,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:45:22,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179563245] [2023-08-04 04:45:22,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:45:22,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:45:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:45:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 04:45:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:45:22,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179563245] [2023-08-04 04:45:22,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179563245] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:45:22,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460418348] [2023-08-04 04:45:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:45:22,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:45:22,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:45:22,904 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:45:22,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 04:45:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:45:22,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:45:22,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:45:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 04:45:23,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:45:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 04:45:23,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460418348] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:45:23,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:45:23,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:45:23,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124581307] [2023-08-04 04:45:23,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:45:23,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:45:23,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:45:23,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:45:23,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:45:23,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 283 [2023-08-04 04:45:23,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 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) [2023-08-04 04:45:23,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:45:23,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 283 [2023-08-04 04:45:23,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:45:26,499 INFO L124 PetriNetUnfolderBase]: 43883/64761 cut-off events. [2023-08-04 04:45:26,500 INFO L125 PetriNetUnfolderBase]: For 3889/3889 co-relation queries the response was YES. [2023-08-04 04:45:26,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123004 conditions, 64761 events. 43883/64761 cut-off events. For 3889/3889 co-relation queries the response was YES. Maximal size of possible extension queue 3349. Compared 517364 event pairs, 16617 based on Foata normal form. 5/54722 useless extension candidates. Maximal degree in co-relation 102161. Up to 55199 conditions per place. [2023-08-04 04:45:26,783 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 56 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2023-08-04 04:45:26,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 336 flow [2023-08-04 04:45:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:45:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:45:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 600 transitions. [2023-08-04 04:45:26,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300353356890459 [2023-08-04 04:45:26,785 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 600 transitions. [2023-08-04 04:45:26,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 600 transitions. [2023-08-04 04:45:26,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:45:26,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 600 transitions. [2023-08-04 04:45:26,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2023-08-04 04:45:26,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-08-04 04:45:26,789 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-08-04 04:45:26,789 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 191 flow. Second operand 4 states and 600 transitions. [2023-08-04 04:45:26,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 336 flow [2023-08-04 04:45:26,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 82 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:45:26,791 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 188 flow [2023-08-04 04:45:26,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2023-08-04 04:45:26,792 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2023-08-04 04:45:26,792 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 188 flow [2023-08-04 04:45:26,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 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) [2023-08-04 04:45:26,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:45:26,793 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:45:26,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 04:45:26,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-04 04:45:26,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:45:26,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:45:26,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1541585486, now seen corresponding path program 1 times [2023-08-04 04:45:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:45:26,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214995529] [2023-08-04 04:45:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:45:26,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:45:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:45:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:45:27,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:45:27,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214995529] [2023-08-04 04:45:27,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214995529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:45:27,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887219503] [2023-08-04 04:45:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:45:27,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:45:27,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:45:27,066 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:45:27,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 04:45:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:45:27,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:45:27,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:45:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:45:27,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:45:27,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887219503] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:45:27,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:45:27,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 04:45:27,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007887661] [2023-08-04 04:45:27,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:45:27,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:45:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:45:27,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:45:27,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:45:27,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 283 [2023-08-04 04:45:27,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 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) [2023-08-04 04:45:27,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:45:27,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 283 [2023-08-04 04:45:27,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:45:29,641 INFO L124 PetriNetUnfolderBase]: 34885/50086 cut-off events. [2023-08-04 04:45:29,641 INFO L125 PetriNetUnfolderBase]: For 2185/2185 co-relation queries the response was YES. [2023-08-04 04:45:29,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99814 conditions, 50086 events. 34885/50086 cut-off events. For 2185/2185 co-relation queries the response was YES. Maximal size of possible extension queue 2578. Compared 384788 event pairs, 181 based on Foata normal form. 0/42892 useless extension candidates. Maximal degree in co-relation 28037. Up to 41851 conditions per place. [2023-08-04 04:45:29,999 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2023-08-04 04:45:29,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 113 transitions, 458 flow [2023-08-04 04:45:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:45:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:45:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 766 transitions. [2023-08-04 04:45:30,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413427561837456 [2023-08-04 04:45:30,001 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 766 transitions. [2023-08-04 04:45:30,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 766 transitions. [2023-08-04 04:45:30,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:45:30,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 766 transitions. [2023-08-04 04:45:30,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 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) [2023-08-04 04:45:30,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 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) [2023-08-04 04:45:30,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 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) [2023-08-04 04:45:30,006 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 188 flow. Second operand 5 states and 766 transitions. [2023-08-04 04:45:30,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 113 transitions, 458 flow [2023-08-04 04:45:30,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 113 transitions, 446 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 04:45:30,019 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2023-08-04 04:45:30,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2023-08-04 04:45:30,019 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2023-08-04 04:45:30,019 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2023-08-04 04:45:30,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 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) [2023-08-04 04:45:30,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 04:45:30,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 04:45:30,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 04:45:30,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-04 04:45:30,226 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 04:45:30,226 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE (2/2) [2023-08-04 04:45:30,226 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:45:30,227 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:45:30,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:45:30 BasicIcfg [2023-08-04 04:45:30,232 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:45:30,233 INFO L158 Benchmark]: Toolchain (without parser) took 102514.57ms. Allocated memory was 574.6MB in the beginning and 15.9GB in the end (delta: 15.4GB). Free memory was 519.9MB in the beginning and 9.1GB in the end (delta: -8.5GB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. [2023-08-04 04:45:30,233 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 339.7MB. Free memory was 289.7MB in the beginning and 289.5MB in the end (delta: 128.6kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:45:30,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.87ms. Allocated memory is still 574.6MB. Free memory was 519.9MB in the beginning and 499.8MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 04:45:30,233 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.92ms. Allocated memory is still 574.6MB. Free memory was 499.8MB in the beginning and 497.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:45:30,234 INFO L158 Benchmark]: Boogie Preprocessor took 57.33ms. Allocated memory is still 574.6MB. Free memory was 497.5MB in the beginning and 496.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:45:30,234 INFO L158 Benchmark]: RCFGBuilder took 443.33ms. Allocated memory is still 574.6MB. Free memory was 496.0MB in the beginning and 538.6MB in the end (delta: -42.7MB). Peak memory consumption was 22.5MB. Max. memory is 16.0GB. [2023-08-04 04:45:30,235 INFO L158 Benchmark]: TraceAbstraction took 101547.97ms. Allocated memory was 574.6MB in the beginning and 15.9GB in the end (delta: 15.4GB). Free memory was 537.4MB in the beginning and 9.1GB in the end (delta: -8.5GB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. [2023-08-04 04:45:30,237 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 339.7MB. Free memory was 289.7MB in the beginning and 289.5MB in the end (delta: 128.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 417.87ms. Allocated memory is still 574.6MB. Free memory was 519.9MB in the beginning and 499.8MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.92ms. Allocated memory is still 574.6MB. Free memory was 499.8MB in the beginning and 497.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 57.33ms. Allocated memory is still 574.6MB. Free memory was 497.5MB in the beginning and 496.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 443.33ms. Allocated memory is still 574.6MB. Free memory was 496.0MB in the beginning and 538.6MB in the end (delta: -42.7MB). Peak memory consumption was 22.5MB. Max. memory is 16.0GB. * TraceAbstraction took 101547.97ms. Allocated memory was 574.6MB in the beginning and 15.9GB in the end (delta: 15.4GB). Free memory was 537.4MB in the beginning and 9.1GB in the end (delta: -8.5GB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 118 PlacesBefore, 39 PlacesAfterwards, 126 TransitionsBefore, 41 TransitionsAfterwards, 3638 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 12 ConcurrentYvCompositions, 6 ChoiceCompositions, 101 TotalNumberOfCompositions, 9586 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5809, independent: 5619, independent conditional: 0, independent unconditional: 5619, dependent: 190, dependent conditional: 0, dependent unconditional: 190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2032, independent: 2007, independent conditional: 0, independent unconditional: 2007, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5809, independent: 3612, independent conditional: 0, independent unconditional: 3612, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 2032, unknown conditional: 0, unknown unconditional: 2032] , Statistics on independence cache: Total cache size (in pairs): 242, Positive cache size: 228, Positive conditional cache size: 0, Positive unconditional cache size: 228, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 118 PlacesBefore, 39 PlacesAfterwards, 126 TransitionsBefore, 41 TransitionsAfterwards, 3638 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 12 ConcurrentYvCompositions, 6 ChoiceCompositions, 97 TotalNumberOfCompositions, 8714 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5603, independent: 5439, independent conditional: 0, independent unconditional: 5439, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2022, independent: 1997, independent conditional: 0, independent unconditional: 1997, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5603, independent: 3442, independent conditional: 0, independent unconditional: 3442, dependent: 139, dependent conditional: 0, dependent unconditional: 139, unknown: 2022, unknown conditional: 0, unknown unconditional: 2022] , Statistics on independence cache: Total cache size (in pairs): 234, Positive cache size: 222, Positive conditional cache size: 0, Positive unconditional cache size: 222, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 153 PlacesBefore, 66 PlacesAfterwards, 165 TransitionsBefore, 73 TransitionsAfterwards, 10124 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 18 ConcurrentYvCompositions, 5 ChoiceCompositions, 118 TotalNumberOfCompositions, 45426 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18656, independent: 18115, independent conditional: 0, independent unconditional: 18115, dependent: 541, dependent conditional: 0, dependent unconditional: 541, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5373, independent: 5297, independent conditional: 0, independent unconditional: 5297, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 18656, independent: 12818, independent conditional: 0, independent unconditional: 12818, dependent: 465, dependent conditional: 0, dependent unconditional: 465, unknown: 5373, unknown conditional: 0, unknown unconditional: 5373] , Statistics on independence cache: Total cache size (in pairs): 958, Positive cache size: 913, Positive conditional cache size: 0, Positive unconditional cache size: 913, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 153 PlacesBefore, 66 PlacesAfterwards, 165 TransitionsBefore, 73 TransitionsAfterwards, 10124 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 19 ConcurrentYvCompositions, 5 ChoiceCompositions, 118 TotalNumberOfCompositions, 45438 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19878, independent: 19337, independent conditional: 0, independent unconditional: 19337, dependent: 541, dependent conditional: 0, dependent unconditional: 541, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5423, independent: 5357, independent conditional: 0, independent unconditional: 5357, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19878, independent: 13980, independent conditional: 0, independent unconditional: 13980, dependent: 475, dependent conditional: 0, dependent unconditional: 475, unknown: 5423, unknown conditional: 0, unknown unconditional: 5423] , Statistics on independence cache: Total cache size (in pairs): 997, Positive cache size: 957, Positive conditional cache size: 0, Positive unconditional cache size: 957, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 702]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 710]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 145 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 371 IncrementalHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 6 mSDtfsCounter, 371 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=3, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 517 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 2/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 176 locations, 8 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: 74.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 69.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 288 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 217 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 665 IncrementalHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 27 mSDtfsCounter, 665 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=283occurred in iteration=5, InterpolantAutomatonStates: 18, 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, 126 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 0 NumberOfNonLiveVariables, 491 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 3/6 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 for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 145 locations, 6 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: 3.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 7 procedures, 176 locations, 8 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: 18.0s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 284 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 252 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 460 IncrementalHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 7 mSDtfsCounter, 460 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 0.2s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 498 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 66/79 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:45:30,269 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...