./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:21:15,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:21:15,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:21:15,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:21:15,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:21:15,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:21:15,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:21:15,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:21:15,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:21:15,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:21:15,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:21:15,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:21:15,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:21:15,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:21:15,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:21:15,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:21:15,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:21:15,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:21:15,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:21:15,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:21:15,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:21:15,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:21:15,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:21:15,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:21:15,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:21:15,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:21:15,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:21:15,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:21:15,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:21:15,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:21:15,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:21:15,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:21:15,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:21:15,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:21:15,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:21:15,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:21:15,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:21:15,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:21:15,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:21:15,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:21:15,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:21:15,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:21:15,626 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:21:15,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:21:15,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:21:15,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:21:15,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:21:15,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:21:15,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:21:15,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:21:15,628 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:21:15,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:21:15,629 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:21:15,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:21:15,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:21:15,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:21:15,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:21:15,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:21:15,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:21:15,631 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:21:15,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:21:15,631 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:21:15,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:21:15,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:21:15,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:21:15,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:21:15,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:21:15,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:21:15,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:21:15,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:21:15,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:21:15,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:21:15,633 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:21:15,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:21:15,634 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:21:15,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:21:15,634 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:21:15,634 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:21:15,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:21:15,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:21:15,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:21:15,969 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:21:15,970 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:21:15,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-08-30 23:21:17,057 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:21:17,319 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:21:17,320 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-08-30 23:21:17,342 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a3c26ff4/5c030228f6b24c46a46891fbe56f4b88/FLAG52baa4daa [2023-08-30 23:21:17,353 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a3c26ff4/5c030228f6b24c46a46891fbe56f4b88 [2023-08-30 23:21:17,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:21:17,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:21:17,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:21:17,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:21:17,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:21:17,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:17,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ee11d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17, skipping insertion in model container [2023-08-30 23:21:17,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:17,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:21:17,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:21:17,579 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i[945,958] [2023-08-30 23:21:17,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:21:17,769 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:21:17,782 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i[945,958] [2023-08-30 23:21:17,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:21:17,910 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:21:17,910 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:21:17,916 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:21:17,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17 WrapperNode [2023-08-30 23:21:17,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:21:17,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:21:17,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:21:17,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:21:17,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:17,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:17,979 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-08-30 23:21:17,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:21:17,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:21:17,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:21:17,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:21:17,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:17,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:18,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:18,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:18,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:18,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:18,020 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:18,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:18,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:21:18,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:21:18,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:21:18,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:21:18,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (1/1) ... [2023-08-30 23:21:18,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:21:18,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:21:18,064 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) [2023-08-30 23:21:18,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:21:18,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:21:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:21:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:21:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:21:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:21:18,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:21:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:21:18,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:21:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 23:21:18,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 23:21:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:21:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:21:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:21:18,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:21:18,099 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:21:18,084 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 [2023-08-30 23:21:18,275 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:21:18,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:21:18,427 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:21:18,433 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:21:18,433 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:21:18,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:21:18 BoogieIcfgContainer [2023-08-30 23:21:18,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:21:18,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:21:18,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:21:18,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:21:18,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:21:17" (1/3) ... [2023-08-30 23:21:18,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a774c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:21:18, skipping insertion in model container [2023-08-30 23:21:18,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:17" (2/3) ... [2023-08-30 23:21:18,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a774c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:21:18, skipping insertion in model container [2023-08-30 23:21:18,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:21:18" (3/3) ... [2023-08-30 23:21:18,442 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2023-08-30 23:21:18,449 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:21:18,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:21:18,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 23:21:18,458 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:21:18,531 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:21:18,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2023-08-30 23:21:18,608 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2023-08-30 23:21:18,609 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:21:18,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-30 23:21:18,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2023-08-30 23:21:18,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2023-08-30 23:21:18,623 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:21:18,634 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2023-08-30 23:21:18,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2023-08-30 23:21:18,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2023-08-30 23:21:18,671 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2023-08-30 23:21:18,674 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:21:18,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-30 23:21:18,677 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-30 23:21:20,637 INFO L134 LiptonReduction]: Checked pairs total: 1960 [2023-08-30 23:21:20,637 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-08-30 23:21:20,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:21:20,655 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;@1dfd7a40, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:21:20,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 23:21:20,660 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 23:21:20,660 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:21:20,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:20,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:20,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:21:20,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:20,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1939323800, now seen corresponding path program 1 times [2023-08-30 23:21:20,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:20,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629953275] [2023-08-30 23:21:20,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:20,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:21:21,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:21,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629953275] [2023-08-30 23:21:21,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629953275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:21,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:21,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:21:21,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161101817] [2023-08-30 23:21:21,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:21,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:21:21,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:21,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:21:21,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:21:21,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-08-30 23:21:21,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:21:21,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:21,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-08-30 23:21:21,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:21,402 INFO L130 PetriNetUnfolder]: 289/462 cut-off events. [2023-08-30 23:21:21,402 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 23:21:21,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 462 events. 289/462 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1774 event pairs, 85 based on Foata normal form. 6/466 useless extension candidates. Maximal degree in co-relation 950. Up to 407 conditions per place. [2023-08-30 23:21:21,407 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 23 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-08-30 23:21:21,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 121 flow [2023-08-30 23:21:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:21:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:21:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-08-30 23:21:21,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804195804195804 [2023-08-30 23:21:21,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-08-30 23:21:21,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-08-30 23:21:21,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:21,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-08-30 23:21:21,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2023-08-30 23:21:21,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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) [2023-08-30 23:21:21,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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) [2023-08-30 23:21:21,437 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 249 transitions. [2023-08-30 23:21:21,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 121 flow [2023-08-30 23:21:21,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:21:21,441 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-08-30 23:21:21,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-30 23:21:21,446 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-08-30 23:21:21,446 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-08-30 23:21:21,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:21:21,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:21,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:21,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:21:21,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:21:21,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:21,448 INFO L85 PathProgramCache]: Analyzing trace with hash 10503732, now seen corresponding path program 1 times [2023-08-30 23:21:21,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:21,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135140955] [2023-08-30 23:21:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:21,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:21:21,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:21,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135140955] [2023-08-30 23:21:21,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135140955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:21,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:21,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:21:21,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394144644] [2023-08-30 23:21:21,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:21,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:21:21,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:21,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:21:21,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:21:21,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 143 [2023-08-30 23:21:21,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2023-08-30 23:21:21,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:21,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 143 [2023-08-30 23:21:21,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:21,686 INFO L130 PetriNetUnfolder]: 241/442 cut-off events. [2023-08-30 23:21:21,687 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-30 23:21:21,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 442 events. 241/442 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1979 event pairs, 83 based on Foata normal form. 40/481 useless extension candidates. Maximal degree in co-relation 944. Up to 138 conditions per place. [2023-08-30 23:21:21,690 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 21 selfloop transitions, 4 changer transitions 4/32 dead transitions. [2023-08-30 23:21:21,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 150 flow [2023-08-30 23:21:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:21:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:21:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-08-30 23:21:21,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821678321678322 [2023-08-30 23:21:21,693 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-08-30 23:21:21,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-08-30 23:21:21,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:21,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-08-30 23:21:21,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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) [2023-08-30 23:21:21,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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) [2023-08-30 23:21:21,697 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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) [2023-08-30 23:21:21,697 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 4 states and 333 transitions. [2023-08-30 23:21:21,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 150 flow [2023-08-30 23:21:21,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:21:21,698 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 73 flow [2023-08-30 23:21:21,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-08-30 23:21:21,699 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-08-30 23:21:21,700 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 73 flow [2023-08-30 23:21:21,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2023-08-30 23:21:21,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:21,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:21,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:21:21,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:21:21,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1896609912, now seen corresponding path program 1 times [2023-08-30 23:21:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:21,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970243249] [2023-08-30 23:21:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:21,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:21:21,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:21,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970243249] [2023-08-30 23:21:21,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970243249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:21,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:21,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:21:21,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113453734] [2023-08-30 23:21:21,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:21,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:21:21,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:21,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:21:21,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:21:22,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-08-30 23:21:22,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2023-08-30 23:21:22,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:22,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-08-30 23:21:22,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:22,088 INFO L130 PetriNetUnfolder]: 119/232 cut-off events. [2023-08-30 23:21:22,088 INFO L131 PetriNetUnfolder]: For 200/203 co-relation queries the response was YES. [2023-08-30 23:21:22,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 232 events. 119/232 cut-off events. For 200/203 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 892 event pairs, 29 based on Foata normal form. 19/247 useless extension candidates. Maximal degree in co-relation 585. Up to 139 conditions per place. [2023-08-30 23:21:22,091 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 29 selfloop transitions, 7 changer transitions 5/45 dead transitions. [2023-08-30 23:21:22,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 241 flow [2023-08-30 23:21:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:21:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:21:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2023-08-30 23:21:22,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.579020979020979 [2023-08-30 23:21:22,093 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 414 transitions. [2023-08-30 23:21:22,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 414 transitions. [2023-08-30 23:21:22,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:22,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 414 transitions. [2023-08-30 23:21:22,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.8) internal successors, (414), 5 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) [2023-08-30 23:21:22,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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) [2023-08-30 23:21:22,098 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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) [2023-08-30 23:21:22,098 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 73 flow. Second operand 5 states and 414 transitions. [2023-08-30 23:21:22,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 241 flow [2023-08-30 23:21:22,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:21:22,101 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 122 flow [2023-08-30 23:21:22,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-30 23:21:22,103 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-30 23:21:22,104 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 122 flow [2023-08-30 23:21:22,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2023-08-30 23:21:22,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:22,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:22,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:21:22,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:21:22,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:22,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1386944140, now seen corresponding path program 1 times [2023-08-30 23:21:22,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:22,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034609712] [2023-08-30 23:21:22,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:22,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:21:22,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:22,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034609712] [2023-08-30 23:21:22,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034609712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:22,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:22,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:21:22,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765766002] [2023-08-30 23:21:22,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:22,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:21:22,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:22,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:21:22,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:21:22,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-08-30 23:21:22,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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) [2023-08-30 23:21:22,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:22,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-08-30 23:21:22,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:22,408 INFO L130 PetriNetUnfolder]: 98/208 cut-off events. [2023-08-30 23:21:22,408 INFO L131 PetriNetUnfolder]: For 356/387 co-relation queries the response was YES. [2023-08-30 23:21:22,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 208 events. 98/208 cut-off events. For 356/387 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 811 event pairs, 14 based on Foata normal form. 32/236 useless extension candidates. Maximal degree in co-relation 701. Up to 99 conditions per place. [2023-08-30 23:21:22,410 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 32 selfloop transitions, 13 changer transitions 8/57 dead transitions. [2023-08-30 23:21:22,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 368 flow [2023-08-30 23:21:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:21:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:21:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 576 transitions. [2023-08-30 23:21:22,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5754245754245755 [2023-08-30 23:21:22,413 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 576 transitions. [2023-08-30 23:21:22,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 576 transitions. [2023-08-30 23:21:22,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:22,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 576 transitions. [2023-08-30 23:21:22,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.28571428571429) internal successors, (576), 7 states have internal predecessors, (576), 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) [2023-08-30 23:21:22,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 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) [2023-08-30 23:21:22,417 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 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) [2023-08-30 23:21:22,417 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 122 flow. Second operand 7 states and 576 transitions. [2023-08-30 23:21:22,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 368 flow [2023-08-30 23:21:22,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:21:22,420 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 206 flow [2023-08-30 23:21:22,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-08-30 23:21:22,421 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-08-30 23:21:22,421 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 206 flow [2023-08-30 23:21:22,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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) [2023-08-30 23:21:22,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:22,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:22,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:21:22,422 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:21:22,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:22,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1415012507, now seen corresponding path program 1 times [2023-08-30 23:21:22,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:22,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232267710] [2023-08-30 23:21:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:22,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:21:22,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:22,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232267710] [2023-08-30 23:21:22,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232267710] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:22,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:22,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:21:22,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494006468] [2023-08-30 23:21:22,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:22,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:21:22,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:22,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:21:22,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:21:22,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-08-30 23:21:22,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 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) [2023-08-30 23:21:22,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:22,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-08-30 23:21:22,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:22,686 INFO L130 PetriNetUnfolder]: 84/187 cut-off events. [2023-08-30 23:21:22,687 INFO L131 PetriNetUnfolder]: For 510/542 co-relation queries the response was YES. [2023-08-30 23:21:22,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 187 events. 84/187 cut-off events. For 510/542 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 724 event pairs, 12 based on Foata normal form. 24/207 useless extension candidates. Maximal degree in co-relation 726. Up to 86 conditions per place. [2023-08-30 23:21:22,688 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 29 selfloop transitions, 17 changer transitions 7/57 dead transitions. [2023-08-30 23:21:22,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 426 flow [2023-08-30 23:21:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:21:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:21:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 726 transitions. [2023-08-30 23:21:22,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2023-08-30 23:21:22,691 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 726 transitions. [2023-08-30 23:21:22,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 726 transitions. [2023-08-30 23:21:22,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:22,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 726 transitions. [2023-08-30 23:21:22,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.66666666666667) internal successors, (726), 9 states have internal predecessors, (726), 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) [2023-08-30 23:21:22,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 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) [2023-08-30 23:21:22,696 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 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) [2023-08-30 23:21:22,696 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 206 flow. Second operand 9 states and 726 transitions. [2023-08-30 23:21:22,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 426 flow [2023-08-30 23:21:22,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 396 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 23:21:22,702 INFO L231 Difference]: Finished difference. Result has 53 places, 32 transitions, 232 flow [2023-08-30 23:21:22,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2023-08-30 23:21:22,704 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-08-30 23:21:22,704 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 232 flow [2023-08-30 23:21:22,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 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) [2023-08-30 23:21:22,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:22,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:22,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:21:22,705 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:21:22,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash -961641232, now seen corresponding path program 1 times [2023-08-30 23:21:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:22,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903375672] [2023-08-30 23:21:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:22,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:21:22,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:22,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903375672] [2023-08-30 23:21:22,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903375672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:22,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:22,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:21:22,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719625154] [2023-08-30 23:21:22,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:22,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:21:22,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:22,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:21:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:21:22,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 143 [2023-08-30 23:21:22,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 32 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2023-08-30 23:21:22,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:22,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 143 [2023-08-30 23:21:22,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:22,984 INFO L130 PetriNetUnfolder]: 160/323 cut-off events. [2023-08-30 23:21:22,984 INFO L131 PetriNetUnfolder]: For 930/930 co-relation queries the response was YES. [2023-08-30 23:21:22,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 323 events. 160/323 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1425 event pairs, 12 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 1274. Up to 182 conditions per place. [2023-08-30 23:21:22,986 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 33 selfloop transitions, 7 changer transitions 37/78 dead transitions. [2023-08-30 23:21:22,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 713 flow [2023-08-30 23:21:22,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:21:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:21:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 401 transitions. [2023-08-30 23:21:22,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5608391608391609 [2023-08-30 23:21:22,989 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 401 transitions. [2023-08-30 23:21:22,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 401 transitions. [2023-08-30 23:21:22,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:22,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 401 transitions. [2023-08-30 23:21:22,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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) [2023-08-30 23:21:22,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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) [2023-08-30 23:21:22,993 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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) [2023-08-30 23:21:22,993 INFO L175 Difference]: Start difference. First operand has 53 places, 32 transitions, 232 flow. Second operand 5 states and 401 transitions. [2023-08-30 23:21:22,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 713 flow [2023-08-30 23:21:22,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 572 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-08-30 23:21:22,999 INFO L231 Difference]: Finished difference. Result has 50 places, 27 transitions, 158 flow [2023-08-30 23:21:22,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=50, PETRI_TRANSITIONS=27} [2023-08-30 23:21:22,999 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-08-30 23:21:23,000 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 27 transitions, 158 flow [2023-08-30 23:21:23,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2023-08-30 23:21:23,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:23,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:23,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:21:23,001 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:21:23,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash -528883398, now seen corresponding path program 2 times [2023-08-30 23:21:23,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:23,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604421271] [2023-08-30 23:21:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:23,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:21:23,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:23,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604421271] [2023-08-30 23:21:23,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604421271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:23,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:23,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:21:23,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818500620] [2023-08-30 23:21:23,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:23,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:21:23,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:23,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:21:23,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:21:23,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 143 [2023-08-30 23:21:23,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 27 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-08-30 23:21:23,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:23,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 143 [2023-08-30 23:21:23,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:23,177 INFO L130 PetriNetUnfolder]: 47/115 cut-off events. [2023-08-30 23:21:23,177 INFO L131 PetriNetUnfolder]: For 234/236 co-relation queries the response was YES. [2023-08-30 23:21:23,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 115 events. 47/115 cut-off events. For 234/236 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 362 event pairs, 7 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 406. Up to 51 conditions per place. [2023-08-30 23:21:23,178 INFO L137 encePairwiseOnDemand]: 140/143 looper letters, 24 selfloop transitions, 1 changer transitions 19/46 dead transitions. [2023-08-30 23:21:23,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 338 flow [2023-08-30 23:21:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:21:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:21:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-08-30 23:21:23,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821678321678322 [2023-08-30 23:21:23,179 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-08-30 23:21:23,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-08-30 23:21:23,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:23,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-08-30 23:21:23,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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) [2023-08-30 23:21:23,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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) [2023-08-30 23:21:23,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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) [2023-08-30 23:21:23,182 INFO L175 Difference]: Start difference. First operand has 50 places, 27 transitions, 158 flow. Second operand 4 states and 333 transitions. [2023-08-30 23:21:23,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 338 flow [2023-08-30 23:21:23,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 316 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-30 23:21:23,191 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 113 flow [2023-08-30 23:21:23,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2023-08-30 23:21:23,192 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-08-30 23:21:23,192 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 113 flow [2023-08-30 23:21:23,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-08-30 23:21:23,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:21:23,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:21:23,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:21:23,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:21:23,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:21:23,193 INFO L85 PathProgramCache]: Analyzing trace with hash 154330364, now seen corresponding path program 3 times [2023-08-30 23:21:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:21:23,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702774555] [2023-08-30 23:21:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:21:23,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:21:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:21:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:21:23,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:21:23,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702774555] [2023-08-30 23:21:23,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702774555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:21:23,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:21:23,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:21:23,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707727987] [2023-08-30 23:21:23,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:21:23,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:21:23,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:21:23,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:21:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:21:23,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 143 [2023-08-30 23:21:23,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-08-30 23:21:23,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:21:23,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 143 [2023-08-30 23:21:23,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:21:23,351 INFO L130 PetriNetUnfolder]: 21/61 cut-off events. [2023-08-30 23:21:23,352 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2023-08-30 23:21:23,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 61 events. 21/61 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 5 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 218. Up to 27 conditions per place. [2023-08-30 23:21:23,352 INFO L137 encePairwiseOnDemand]: 140/143 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-30 23:21:23,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 28 transitions, 189 flow [2023-08-30 23:21:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:21:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:21:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 323 transitions. [2023-08-30 23:21:23,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646853146853147 [2023-08-30 23:21:23,354 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 323 transitions. [2023-08-30 23:21:23,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 323 transitions. [2023-08-30 23:21:23,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:21:23,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 323 transitions. [2023-08-30 23:21:23,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2023-08-30 23:21:23,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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) [2023-08-30 23:21:23,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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) [2023-08-30 23:21:23,356 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 113 flow. Second operand 4 states and 323 transitions. [2023-08-30 23:21:23,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 28 transitions, 189 flow [2023-08-30 23:21:23,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 180 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 23:21:23,357 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-30 23:21:23,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-30 23:21:23,358 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-30 23:21:23,358 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-30 23:21:23,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-08-30 23:21:23,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 23:21:23,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 23:21:23,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 23:21:23,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 23:21:23,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:21:23,362 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2023-08-30 23:21:23,364 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:21:23,364 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:21:23,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:21:23 BasicIcfg [2023-08-30 23:21:23,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:21:23,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:21:23,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:21:23,367 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:21:23,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:21:18" (3/4) ... [2023-08-30 23:21:23,370 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 23:21:23,375 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 23:21:23,375 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 23:21:23,375 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 23:21:23,379 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 23:21:23,379 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 23:21:23,379 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 23:21:23,379 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 23:21:23,405 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:21:23,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:21:23,405 INFO L158 Benchmark]: Toolchain (without parser) took 6049.54ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 53.7MB in the beginning and 57.4MB in the end (delta: -3.7MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2023-08-30 23:21:23,405 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:21:23,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 559.11ms. Allocated memory is still 77.6MB. Free memory was 53.5MB in the beginning and 51.3MB in the end (delta: 2.2MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2023-08-30 23:21:23,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.12ms. Allocated memory is still 77.6MB. Free memory was 51.3MB in the beginning and 49.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:21:23,406 INFO L158 Benchmark]: Boogie Preprocessor took 46.44ms. Allocated memory is still 77.6MB. Free memory was 49.3MB in the beginning and 47.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:21:23,406 INFO L158 Benchmark]: RCFGBuilder took 407.62ms. Allocated memory is still 77.6MB. Free memory was 47.6MB in the beginning and 34.2MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 23:21:23,407 INFO L158 Benchmark]: TraceAbstraction took 4930.02ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 33.3MB in the beginning and 60.6MB in the end (delta: -27.3MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2023-08-30 23:21:23,407 INFO L158 Benchmark]: Witness Printer took 37.61ms. Allocated memory is still 136.3MB. Free memory was 60.6MB in the beginning and 57.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:21:23,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 559.11ms. Allocated memory is still 77.6MB. Free memory was 53.5MB in the beginning and 51.3MB in the end (delta: 2.2MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.12ms. Allocated memory is still 77.6MB. Free memory was 51.3MB in the beginning and 49.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.44ms. Allocated memory is still 77.6MB. Free memory was 49.3MB in the beginning and 47.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 407.62ms. Allocated memory is still 77.6MB. Free memory was 47.6MB in the beginning and 34.2MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4930.02ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 33.3MB in the beginning and 60.6MB in the end (delta: -27.3MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. * Witness Printer took 37.61ms. Allocated memory is still 136.3MB. Free memory was 60.6MB in the beginning and 57.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 80 PlacesBefore, 27 PlacesAfterwards, 71 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 1960 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1093, independent: 1001, independent conditional: 0, independent unconditional: 1001, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 566, independent: 542, independent conditional: 0, independent unconditional: 542, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1093, independent: 459, independent conditional: 0, independent unconditional: 459, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 566, unknown conditional: 0, unknown unconditional: 566] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: 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 7 procedures, 109 locations, 4 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: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 221 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 472 IncrementalHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 24 mSDtfsCounter, 472 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=5, InterpolantAutomatonStates: 41, 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, 1.5s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 363 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 23:21:23,429 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE