/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:15:31,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:15:31,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:15:31,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:15:31,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:15:31,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:15:31,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:15:31,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:15:31,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:15:31,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:15:31,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:15:31,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:15:31,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:15:31,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:15:31,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:15:31,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:15:31,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:15:31,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:15:31,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:15:31,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:15:31,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:15:31,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:15:31,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:15:31,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:15:31,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 20:15:31,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:15:31,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:15:31,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:15:31,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-05 20:15:31,486 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:15:31,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:15:31,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:15:31,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:15:31,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:15:31,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:15:31,488 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:15:31,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:15:31,488 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:15:31,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:15:31,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:15:31,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:15:31,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:15:31,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:15:31,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:15:31,497 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:15:31,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:15:31,497 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:15:31,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:15:31,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:15:31,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:15:31,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:15:31,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:15:31,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:15:31,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:15:31,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:15:31,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:15:31,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:15:31,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:15:31,498 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:15:31,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:15:31,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:15:31,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:15:31,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:15:31,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:15:31,779 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:15:31,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2022-12-05 20:15:32,734 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:15:32,994 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:15:32,994 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2022-12-05 20:15:33,002 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/019e9516d/d382bdfb450f4dfab49f03610b728501/FLAGb09abad2d [2022-12-05 20:15:33,011 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/019e9516d/d382bdfb450f4dfab49f03610b728501 [2022-12-05 20:15:33,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:15:33,014 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:15:33,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:15:33,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:15:33,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:15:33,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14966f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33, skipping insertion in model container [2022-12-05 20:15:33,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:15:33,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:15:33,252 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] [2022-12-05 20:15:33,257 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] [2022-12-05 20:15:33,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:15:33,272 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:15:33,319 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] [2022-12-05 20:15:33,320 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] [2022-12-05 20:15:33,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:15:33,353 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:15:33,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33 WrapperNode [2022-12-05 20:15:33,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:15:33,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:15:33,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:15:33,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:15:33,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,400 INFO L138 Inliner]: procedures = 169, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2022-12-05 20:15:33,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:15:33,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:15:33,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:15:33,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:15:33,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,417 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:15:33,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:15:33,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:15:33,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:15:33,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (1/1) ... [2022-12-05 20:15:33,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:15:33,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:15:33,466 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) [2022-12-05 20:15:33,471 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 [2022-12-05 20:15:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2022-12-05 20:15:33,498 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2022-12-05 20:15:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 20:15:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2022-12-05 20:15:33,498 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2022-12-05 20:15:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:15:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 20:15:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:15:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:15:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:15:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:15:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:15:33,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:15:33,501 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:15:33,637 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:15:33,639 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:15:33,801 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:15:33,805 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:15:33,806 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 20:15:33,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:15:33 BoogieIcfgContainer [2022-12-05 20:15:33,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:15:33,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:15:33,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:15:33,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:15:33,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:15:33" (1/3) ... [2022-12-05 20:15:33,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bfc8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:15:33, skipping insertion in model container [2022-12-05 20:15:33,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:15:33" (2/3) ... [2022-12-05 20:15:33,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bfc8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:15:33, skipping insertion in model container [2022-12-05 20:15:33,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:15:33" (3/3) ... [2022-12-05 20:15:33,813 INFO L112 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2022-12-05 20:15:33,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:15:33,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-05 20:15:33,827 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:15:33,898 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 20:15:33,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 96 transitions, 208 flow [2022-12-05 20:15:33,973 INFO L130 PetriNetUnfolder]: 5/94 cut-off events. [2022-12-05 20:15:33,974 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 20:15:33,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 5/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2022-12-05 20:15:33,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 96 transitions, 208 flow [2022-12-05 20:15:33,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 85 transitions, 179 flow [2022-12-05 20:15:33,984 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:15:34,007 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 85 transitions, 179 flow [2022-12-05 20:15:34,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 85 transitions, 179 flow [2022-12-05 20:15:34,042 INFO L130 PetriNetUnfolder]: 5/85 cut-off events. [2022-12-05 20:15:34,042 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 20:15:34,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 85 events. 5/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2022-12-05 20:15:34,045 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 85 transitions, 179 flow [2022-12-05 20:15:34,045 INFO L188 LiptonReduction]: Number of co-enabled transitions 1042 [2022-12-05 20:15:38,063 INFO L203 LiptonReduction]: Total number of compositions: 67 [2022-12-05 20:15:38,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:15:38,078 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=false, 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;@3c036fc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:15:38,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-05 20:15:38,081 INFO L130 PetriNetUnfolder]: 1/14 cut-off events. [2022-12-05 20:15:38,081 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:15:38,081 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:15:38,082 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-05 20:15:38,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:15:38,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:15:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash 342936018, now seen corresponding path program 1 times [2022-12-05 20:15:38,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:15:38,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116718346] [2022-12-05 20:15:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:15:38,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:15:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:15:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:38,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:15:38,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116718346] [2022-12-05 20:15:38,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116718346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:15:38,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:15:38,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:15:38,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093307757] [2022-12-05 20:15:38,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:15:38,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:15:38,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:15:38,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:15:38,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:15:38,280 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2022-12-05 20:15:38,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-12-05 20:15:38,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:15:38,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2022-12-05 20:15:38,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:15:38,402 INFO L130 PetriNetUnfolder]: 179/344 cut-off events. [2022-12-05 20:15:38,402 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-05 20:15:38,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 344 events. 179/344 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1372 event pairs, 77 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 628. Up to 161 conditions per place. [2022-12-05 20:15:38,407 INFO L137 encePairwiseOnDemand]: 23/30 looper letters, 28 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2022-12-05 20:15:38,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 140 flow [2022-12-05 20:15:38,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:15:38,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:15:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2022-12-05 20:15:38,415 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2022-12-05 20:15:38,416 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 69 flow. Second operand 3 states and 49 transitions. [2022-12-05 20:15:38,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 140 flow [2022-12-05 20:15:38,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 20:15:38,421 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 58 flow [2022-12-05 20:15:38,423 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2022-12-05 20:15:38,427 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2022-12-05 20:15:38,427 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 58 flow [2022-12-05 20:15:38,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-12-05 20:15:38,428 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:15:38,428 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:15:38,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:15:38,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:15:38,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:15:38,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1157444782, now seen corresponding path program 1 times [2022-12-05 20:15:38,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:15:38,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545269114] [2022-12-05 20:15:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:15:38,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:15:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:15:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:38,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:15:38,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545269114] [2022-12-05 20:15:38,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545269114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:15:38,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:15:38,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:15:38,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921063729] [2022-12-05 20:15:38,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:15:38,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:15:38,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:15:38,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:15:38,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:15:38,476 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2022-12-05 20:15:38,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-05 20:15:38,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:15:38,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2022-12-05 20:15:38,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:15:38,541 INFO L130 PetriNetUnfolder]: 219/416 cut-off events. [2022-12-05 20:15:38,541 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-05 20:15:38,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 416 events. 219/416 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1658 event pairs, 113 based on Foata normal form. 22/366 useless extension candidates. Maximal degree in co-relation 637. Up to 252 conditions per place. [2022-12-05 20:15:38,546 INFO L137 encePairwiseOnDemand]: 24/30 looper letters, 27 selfloop transitions, 5 changer transitions 4/38 dead transitions. [2022-12-05 20:15:38,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 159 flow [2022-12-05 20:15:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:15:38,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:15:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2022-12-05 20:15:38,549 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2022-12-05 20:15:38,550 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 58 flow. Second operand 3 states and 43 transitions. [2022-12-05 20:15:38,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 159 flow [2022-12-05 20:15:38,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 155 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:15:38,552 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 82 flow [2022-12-05 20:15:38,552 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-12-05 20:15:38,552 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2022-12-05 20:15:38,553 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 82 flow [2022-12-05 20:15:38,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-05 20:15:38,553 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:15:38,553 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:15:38,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:15:38,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:15:38,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:15:38,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1465912679, now seen corresponding path program 1 times [2022-12-05 20:15:38,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:15:38,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101783318] [2022-12-05 20:15:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:15:38,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:15:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:15:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:38,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:15:38,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101783318] [2022-12-05 20:15:38,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101783318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:15:38,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:15:38,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:15:38,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813328792] [2022-12-05 20:15:38,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:15:38,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:15:38,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:15:38,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:15:38,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:15:38,626 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2022-12-05 20:15:38,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-05 20:15:38,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:15:38,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2022-12-05 20:15:38,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:15:38,683 INFO L130 PetriNetUnfolder]: 176/342 cut-off events. [2022-12-05 20:15:38,683 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-12-05 20:15:38,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 342 events. 176/342 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1301 event pairs, 95 based on Foata normal form. 16/308 useless extension candidates. Maximal degree in co-relation 659. Up to 215 conditions per place. [2022-12-05 20:15:38,685 INFO L137 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 4 changer transitions 9/36 dead transitions. [2022-12-05 20:15:38,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 36 transitions, 173 flow [2022-12-05 20:15:38,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:15:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:15:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2022-12-05 20:15:38,688 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2022-12-05 20:15:38,688 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 82 flow. Second operand 3 states and 41 transitions. [2022-12-05 20:15:38,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 36 transitions, 173 flow [2022-12-05 20:15:38,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:15:38,691 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 78 flow [2022-12-05 20:15:38,691 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2022-12-05 20:15:38,692 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2022-12-05 20:15:38,692 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 78 flow [2022-12-05 20:15:38,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-05 20:15:38,692 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:15:38,692 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:15:38,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:15:38,694 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:15:38,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:15:38,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1785435384, now seen corresponding path program 1 times [2022-12-05 20:15:38,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:15:38,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137600651] [2022-12-05 20:15:38,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:15:38,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:15:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:15:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:38,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:15:38,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137600651] [2022-12-05 20:15:38,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137600651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:15:38,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:15:38,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:15:38,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422021817] [2022-12-05 20:15:38,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:15:38,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:15:38,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:15:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:15:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:15:38,823 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2022-12-05 20:15:38,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-05 20:15:38,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:15:38,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2022-12-05 20:15:38,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:15:38,889 INFO L130 PetriNetUnfolder]: 87/203 cut-off events. [2022-12-05 20:15:38,890 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-12-05 20:15:38,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 203 events. 87/203 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 762 event pairs, 12 based on Foata normal form. 8/191 useless extension candidates. Maximal degree in co-relation 425. Up to 68 conditions per place. [2022-12-05 20:15:38,891 INFO L137 encePairwiseOnDemand]: 20/30 looper letters, 20 selfloop transitions, 12 changer transitions 15/48 dead transitions. [2022-12-05 20:15:38,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 251 flow [2022-12-05 20:15:38,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:15:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:15:38,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2022-12-05 20:15:38,892 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2022-12-05 20:15:38,892 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 78 flow. Second operand 5 states and 58 transitions. [2022-12-05 20:15:38,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 251 flow [2022-12-05 20:15:38,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 48 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:15:38,895 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 104 flow [2022-12-05 20:15:38,895 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2022-12-05 20:15:38,896 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2022-12-05 20:15:38,896 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 104 flow [2022-12-05 20:15:38,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-05 20:15:38,896 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:15:38,897 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:15:38,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:15:38,897 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-05 20:15:38,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:15:38,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1317151942, now seen corresponding path program 2 times [2022-12-05 20:15:38,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:15:38,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959722850] [2022-12-05 20:15:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:15:38,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:15:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:15:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:15:38,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:15:38,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959722850] [2022-12-05 20:15:38,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959722850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:15:38,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:15:38,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:15:38,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051639348] [2022-12-05 20:15:38,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:15:38,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:15:38,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:15:38,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:15:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:15:38,948 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2022-12-05 20:15:38,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-12-05 20:15:38,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:15:38,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2022-12-05 20:15:38,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:15:38,964 INFO L130 PetriNetUnfolder]: 16/51 cut-off events. [2022-12-05 20:15:38,965 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-05 20:15:38,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 51 events. 16/51 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 143 event pairs, 10 based on Foata normal form. 4/55 useless extension candidates. Maximal degree in co-relation 117. Up to 28 conditions per place. [2022-12-05 20:15:38,965 INFO L137 encePairwiseOnDemand]: 28/30 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2022-12-05 20:15:38,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 16 transitions, 81 flow [2022-12-05 20:15:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:15:38,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:15:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 26 transitions. [2022-12-05 20:15:38,966 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.28888888888888886 [2022-12-05 20:15:38,966 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 104 flow. Second operand 3 states and 26 transitions. [2022-12-05 20:15:38,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 16 transitions, 81 flow [2022-12-05 20:15:38,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 16 transitions, 69 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-05 20:15:38,966 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2022-12-05 20:15:38,966 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2022-12-05 20:15:38,968 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, -12 predicate places. [2022-12-05 20:15:38,968 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2022-12-05 20:15:38,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-12-05 20:15:38,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-05 20:15:38,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-05 20:15:38,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-05 20:15:38,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-05 20:15:38,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-12-05 20:15:38,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-05 20:15:38,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:15:38,977 INFO L458 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-12-05 20:15:38,980 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:15:38,980 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:15:38,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:15:38 BasicIcfg [2022-12-05 20:15:38,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:15:38,983 INFO L158 Benchmark]: Toolchain (without parser) took 5968.65ms. Allocated memory was 189.8MB in the beginning and 234.9MB in the end (delta: 45.1MB). Free memory was 165.4MB in the beginning and 96.9MB in the end (delta: 68.5MB). Peak memory consumption was 114.3MB. Max. memory is 8.0GB. [2022-12-05 20:15:38,983 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 189.8MB. Free memory is still 167.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:15:38,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.88ms. Allocated memory is still 189.8MB. Free memory was 165.4MB in the beginning and 145.8MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-05 20:15:38,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.62ms. Allocated memory is still 189.8MB. Free memory was 145.8MB in the beginning and 143.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:15:38,986 INFO L158 Benchmark]: Boogie Preprocessor took 18.91ms. Allocated memory is still 189.8MB. Free memory was 143.7MB in the beginning and 142.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 20:15:38,986 INFO L158 Benchmark]: RCFGBuilder took 383.81ms. Allocated memory is still 189.8MB. Free memory was 142.3MB in the beginning and 126.3MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-05 20:15:38,986 INFO L158 Benchmark]: TraceAbstraction took 5173.83ms. Allocated memory was 189.8MB in the beginning and 234.9MB in the end (delta: 45.1MB). Free memory was 125.5MB in the beginning and 96.9MB in the end (delta: 28.7MB). Peak memory consumption was 74.5MB. Max. memory is 8.0GB. [2022-12-05 20:15:38,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 189.8MB. Free memory is still 167.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 338.88ms. Allocated memory is still 189.8MB. Free memory was 165.4MB in the beginning and 145.8MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.62ms. Allocated memory is still 189.8MB. Free memory was 145.8MB in the beginning and 143.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.91ms. Allocated memory is still 189.8MB. Free memory was 143.7MB in the beginning and 142.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 383.81ms. Allocated memory is still 189.8MB. Free memory was 142.3MB in the beginning and 126.3MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5173.83ms. Allocated memory was 189.8MB in the beginning and 234.9MB in the end (delta: 45.1MB). Free memory was 125.5MB in the beginning and 96.9MB in the end (delta: 28.7MB). Peak memory consumption was 74.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 87 PlacesBefore, 33 PlacesAfterwards, 85 TransitionsBefore, 30 TransitionsAfterwards, 1042 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 37 TrivialYvCompositions, 22 ConcurrentYvCompositions, 1 ChoiceCompositions, 67 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1105, independent: 1033, independent conditional: 1033, independent unconditional: 0, dependent: 72, dependent conditional: 72, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1105, independent: 1033, independent conditional: 0, independent unconditional: 1033, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1105, independent: 1033, independent conditional: 0, independent unconditional: 1033, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1105, independent: 1033, independent conditional: 0, independent unconditional: 1033, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 725, independent: 700, independent conditional: 0, independent unconditional: 700, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 725, independent: 652, independent conditional: 0, independent unconditional: 652, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 73, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 74, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1105, independent: 333, independent conditional: 0, independent unconditional: 333, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 725, unknown conditional: 0, unknown unconditional: 725] , Statistics on independence cache: Total cache size (in pairs): 1205, Positive cache size: 1180, Positive conditional cache size: 0, Positive unconditional cache size: 1180, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - 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, 125 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: 5.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 211 IncrementalHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 8 mSDtfsCounter, 211 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=4, 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, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 59 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 20:15:39,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...