./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/lamport.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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-atomic/lamport.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 c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:03:34,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:03:34,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:03:34,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:03:34,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:03:34,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:03:34,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:03:34,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:03:34,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:03:34,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:03:34,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:03:34,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:03:34,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:03:34,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:03:34,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:03:34,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:03:34,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:03:34,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:03:34,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:03:34,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:03:34,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:03:34,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:03:34,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:03:34,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:03:34,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:03:34,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:03:34,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:03:34,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:03:34,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:03:34,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:03:34,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:03:34,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:03:34,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:03:34,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:03:34,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:03:34,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:03:34,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:03:34,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:03:34,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:03:34,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:03:34,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:03:34,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:03:34,562 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:03:34,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:03:34,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:03:34,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:03:34,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:03:34,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:03:34,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:03:34,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:03:34,566 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:03:34,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:03:34,567 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:03:34,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:03:34,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:03:34,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:03:34,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:03:34,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:03:34,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:03:34,569 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:03:34,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:03:34,569 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:03:34,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:03:34,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:03:34,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:03:34,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:03:34,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:03:34,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:03:34,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:03:34,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:03:34,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:03:34,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:03:34,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:03:34,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:03:34,572 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:03:34,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:03:34,572 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:03:34,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:03:34,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:03:34,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:03:34,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:03:34,912 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:03:34,913 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:03:34,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2023-09-01 09:03:36,135 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:03:36,442 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:03:36,446 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2023-09-01 09:03:36,462 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902e7bfcd/dee4c11d3af047a491fc7657ddbf14fc/FLAG2e487d028 [2023-09-01 09:03:36,481 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902e7bfcd/dee4c11d3af047a491fc7657ddbf14fc [2023-09-01 09:03:36,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:03:36,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:03:36,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:03:36,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:03:36,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:03:36,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:03:36" (1/1) ... [2023-09-01 09:03:36,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a38d038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:36, skipping insertion in model container [2023-09-01 09:03:36,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:03:36" (1/1) ... [2023-09-01 09:03:36,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:03:36,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:03:36,729 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-09-01 09:03:36,851 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-atomic/lamport.i[32156,32169] [2023-09-01 09:03:36,862 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-atomic/lamport.i[34083,34096] [2023-09-01 09:03:36,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:03:36,886 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:03:36,902 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-09-01 09:03:36,934 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-atomic/lamport.i[32156,32169] [2023-09-01 09:03:36,947 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-atomic/lamport.i[34083,34096] [2023-09-01 09:03:36,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:03:36,998 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:03:37,001 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:03:37,001 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:03:37,006 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:03:37,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37 WrapperNode [2023-09-01 09:03:37,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:03:37,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:03:37,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:03:37,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:03:37,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (1/1) ... [2023-09-01 09:03:37,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (1/1) ... [2023-09-01 09:03:37,038 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-09-01 09:03:37,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:03:37,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:03:37,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:03:37,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:03:37,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (1/1) ... [2023-09-01 09:03:37,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (1/1) ... [2023-09-01 09:03:37,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (1/1) ... [2023-09-01 09:03:37,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (1/1) ... [2023-09-01 09:03:37,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (1/1) ... [2023-09-01 09:03:37,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (1/1) ... [2023-09-01 09:03:37,060 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (1/1) ... [2023-09-01 09:03:37,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (1/1) ... [2023-09-01 09:03:37,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:03:37,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:03:37,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:03:37,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:03:37,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (1/1) ... [2023-09-01 09:03:37,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:03:37,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:37,112 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) [2023-09-01 09:03:37,136 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 [2023-09-01 09:03:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 09:03:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-09-01 09:03:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-09-01 09:03:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-09-01 09:03:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-09-01 09:03:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:03:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:03:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:03:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:03:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:03:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:03:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:03:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:03:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:03:37,155 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:03:37,254 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:03:37,256 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:03:37,503 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:03:37,509 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:03:37,524 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-09-01 09:03:37,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:03:37 BoogieIcfgContainer [2023-09-01 09:03:37,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:03:37,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:03:37,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:03:37,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:03:37,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:03:36" (1/3) ... [2023-09-01 09:03:37,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a6be9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:03:37, skipping insertion in model container [2023-09-01 09:03:37,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:03:37" (2/3) ... [2023-09-01 09:03:37,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a6be9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:03:37, skipping insertion in model container [2023-09-01 09:03:37,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:03:37" (3/3) ... [2023-09-01 09:03:37,534 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2023-09-01 09:03:37,541 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:03:37,548 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:03:37,548 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 09:03:37,549 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:03:37,620 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 09:03:37,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 129 transitions, 274 flow [2023-09-01 09:03:37,689 INFO L130 PetriNetUnfolder]: 24/127 cut-off events. [2023-09-01 09:03:37,690 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:03:37,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 127 events. 24/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 253 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2023-09-01 09:03:37,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 129 transitions, 274 flow [2023-09-01 09:03:37,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 118 transitions, 245 flow [2023-09-01 09:03:37,704 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:03:37,713 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 118 transitions, 245 flow [2023-09-01 09:03:37,720 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 118 transitions, 245 flow [2023-09-01 09:03:37,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 118 transitions, 245 flow [2023-09-01 09:03:37,750 INFO L130 PetriNetUnfolder]: 24/118 cut-off events. [2023-09-01 09:03:37,751 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 09:03:37,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 118 events. 24/118 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 249 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2023-09-01 09:03:37,757 INFO L119 LiptonReduction]: Number of co-enabled transitions 4988 [2023-09-01 09:03:39,271 INFO L134 LiptonReduction]: Checked pairs total: 14233 [2023-09-01 09:03:39,272 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-09-01 09:03:39,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:03:39,301 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;@30fddaab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:03:39,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-09-01 09:03:39,307 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2023-09-01 09:03:39,308 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:03:39,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:39,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 09:03:39,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:03:39,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:39,317 INFO L85 PathProgramCache]: Analyzing trace with hash 16739404, now seen corresponding path program 1 times [2023-09-01 09:03:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298528852] [2023-09-01 09:03:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:39,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:39,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:39,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298528852] [2023-09-01 09:03:39,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298528852] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:39,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:39,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:03:39,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662821793] [2023-09-01 09:03:39,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:39,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 09:03:39,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:39,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 09:03:39,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 09:03:39,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 198 [2023-09-01 09:03:39,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 137 flow. Second operand has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 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) [2023-09-01 09:03:39,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:39,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 198 [2023-09-01 09:03:39,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:39,738 INFO L130 PetriNetUnfolder]: 832/1381 cut-off events. [2023-09-01 09:03:39,739 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-09-01 09:03:39,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2603 conditions, 1381 events. 832/1381 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6767 event pairs, 432 based on Foata normal form. 47/987 useless extension candidates. Maximal degree in co-relation 2454. Up to 1184 conditions per place. [2023-09-01 09:03:39,752 INFO L137 encePairwiseOnDemand]: 192/198 looper letters, 39 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2023-09-01 09:03:39,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 203 flow [2023-09-01 09:03:39,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 09:03:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 09:03:39,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 271 transitions. [2023-09-01 09:03:39,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6843434343434344 [2023-09-01 09:03:39,771 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 271 transitions. [2023-09-01 09:03:39,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 271 transitions. [2023-09-01 09:03:39,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:39,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 271 transitions. [2023-09-01 09:03:39,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:03:39,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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) [2023-09-01 09:03:39,784 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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) [2023-09-01 09:03:39,786 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 137 flow. Second operand 2 states and 271 transitions. [2023-09-01 09:03:39,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 203 flow [2023-09-01 09:03:39,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 09:03:39,791 INFO L231 Difference]: Finished difference. Result has 51 places, 58 transitions, 120 flow [2023-09-01 09:03:39,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=58} [2023-09-01 09:03:39,797 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-09-01 09:03:39,801 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 58 transitions, 120 flow [2023-09-01 09:03:39,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 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) [2023-09-01 09:03:39,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:39,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:39,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:03:39,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:03:39,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:39,804 INFO L85 PathProgramCache]: Analyzing trace with hash -932705631, now seen corresponding path program 1 times [2023-09-01 09:03:39,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:39,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72921592] [2023-09-01 09:03:39,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:39,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:39,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:39,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72921592] [2023-09-01 09:03:39,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72921592] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:39,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:39,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:03:39,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451965546] [2023-09-01 09:03:39,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:39,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:03:39,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:39,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:03:39,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:03:39,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 198 [2023-09-01 09:03:39,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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) [2023-09-01 09:03:39,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:39,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 198 [2023-09-01 09:03:39,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:40,114 INFO L130 PetriNetUnfolder]: 865/1480 cut-off events. [2023-09-01 09:03:40,115 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-09-01 09:03:40,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2758 conditions, 1480 events. 865/1480 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7534 event pairs, 309 based on Foata normal form. 26/1061 useless extension candidates. Maximal degree in co-relation 2755. Up to 896 conditions per place. [2023-09-01 09:03:40,122 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 55 selfloop transitions, 5 changer transitions 1/78 dead transitions. [2023-09-01 09:03:40,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 78 transitions, 283 flow [2023-09-01 09:03:40,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:03:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:03:40,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-09-01 09:03:40,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6531986531986532 [2023-09-01 09:03:40,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-09-01 09:03:40,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-09-01 09:03:40,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:40,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-09-01 09:03:40,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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) [2023-09-01 09:03:40,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-09-01 09:03:40,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-09-01 09:03:40,131 INFO L175 Difference]: Start difference. First operand has 51 places, 58 transitions, 120 flow. Second operand 3 states and 388 transitions. [2023-09-01 09:03:40,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 78 transitions, 283 flow [2023-09-01 09:03:40,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 283 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:03:40,133 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 154 flow [2023-09-01 09:03:40,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-09-01 09:03:40,134 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-09-01 09:03:40,135 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 154 flow [2023-09-01 09:03:40,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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) [2023-09-01 09:03:40,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:40,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:40,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:03:40,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:03:40,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1147973996, now seen corresponding path program 1 times [2023-09-01 09:03:40,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:40,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224520042] [2023-09-01 09:03:40,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:40,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:40,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:40,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224520042] [2023-09-01 09:03:40,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224520042] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:40,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:40,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:03:40,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476728184] [2023-09-01 09:03:40,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:40,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:03:40,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:40,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:03:40,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:03:40,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 198 [2023-09-01 09:03:40,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 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) [2023-09-01 09:03:40,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:40,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 198 [2023-09-01 09:03:40,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:40,382 INFO L130 PetriNetUnfolder]: 827/1440 cut-off events. [2023-09-01 09:03:40,383 INFO L131 PetriNetUnfolder]: For 215/217 co-relation queries the response was YES. [2023-09-01 09:03:40,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2880 conditions, 1440 events. 827/1440 cut-off events. For 215/217 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7296 event pairs, 356 based on Foata normal form. 34/1161 useless extension candidates. Maximal degree in co-relation 2875. Up to 1004 conditions per place. [2023-09-01 09:03:40,389 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 51 selfloop transitions, 4 changer transitions 5/77 dead transitions. [2023-09-01 09:03:40,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 309 flow [2023-09-01 09:03:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:03:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:03:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-09-01 09:03:40,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2023-09-01 09:03:40,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-09-01 09:03:40,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-09-01 09:03:40,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:40,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-09-01 09:03:40,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2023-09-01 09:03:40,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-09-01 09:03:40,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-09-01 09:03:40,395 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 154 flow. Second operand 3 states and 387 transitions. [2023-09-01 09:03:40,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 309 flow [2023-09-01 09:03:40,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:03:40,399 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 158 flow [2023-09-01 09:03:40,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-09-01 09:03:40,400 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-09-01 09:03:40,400 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 158 flow [2023-09-01 09:03:40,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 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) [2023-09-01 09:03:40,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:40,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:03:40,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:03:40,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash -451012777, now seen corresponding path program 1 times [2023-09-01 09:03:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256079327] [2023-09-01 09:03:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:40,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:40,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:40,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256079327] [2023-09-01 09:03:40,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256079327] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:40,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:40,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:03:40,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158851582] [2023-09-01 09:03:40,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:40,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:03:40,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:40,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:03:40,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:03:40,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 198 [2023-09-01 09:03:40,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:03:40,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:40,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 198 [2023-09-01 09:03:40,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:40,711 INFO L130 PetriNetUnfolder]: 1551/2600 cut-off events. [2023-09-01 09:03:40,711 INFO L131 PetriNetUnfolder]: For 647/649 co-relation queries the response was YES. [2023-09-01 09:03:40,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5320 conditions, 2600 events. 1551/2600 cut-off events. For 647/649 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13906 event pairs, 411 based on Foata normal form. 0/2094 useless extension candidates. Maximal degree in co-relation 5314. Up to 1325 conditions per place. [2023-09-01 09:03:40,734 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 66 selfloop transitions, 4 changer transitions 11/96 dead transitions. [2023-09-01 09:03:40,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 96 transitions, 424 flow [2023-09-01 09:03:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:03:40,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:03:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-09-01 09:03:40,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6767676767676768 [2023-09-01 09:03:40,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-09-01 09:03:40,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-09-01 09:03:40,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:40,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-09-01 09:03:40,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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) [2023-09-01 09:03:40,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-09-01 09:03:40,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-09-01 09:03:40,740 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 158 flow. Second operand 3 states and 402 transitions. [2023-09-01 09:03:40,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 96 transitions, 424 flow [2023-09-01 09:03:40,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 96 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:03:40,755 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 188 flow [2023-09-01 09:03:40,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-09-01 09:03:40,757 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-09-01 09:03:40,757 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 188 flow [2023-09-01 09:03:40,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:03:40,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:40,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:40,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:03:40,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:03:40,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash 871684335, now seen corresponding path program 2 times [2023-09-01 09:03:40,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:40,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637551665] [2023-09-01 09:03:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:40,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:40,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:40,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:40,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637551665] [2023-09-01 09:03:40,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637551665] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:40,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:40,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:40,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434357585] [2023-09-01 09:03:40,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:40,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:03:40,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:40,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:03:40,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:03:40,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 198 [2023-09-01 09:03:40,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2023-09-01 09:03:40,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:40,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 198 [2023-09-01 09:03:40,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:41,511 INFO L130 PetriNetUnfolder]: 4562/7534 cut-off events. [2023-09-01 09:03:41,511 INFO L131 PetriNetUnfolder]: For 1594/1616 co-relation queries the response was YES. [2023-09-01 09:03:41,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15913 conditions, 7534 events. 4562/7534 cut-off events. For 1594/1616 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 47053 event pairs, 734 based on Foata normal form. 56/6331 useless extension candidates. Maximal degree in co-relation 15906. Up to 2182 conditions per place. [2023-09-01 09:03:41,551 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 139 selfloop transitions, 6 changer transitions 1/164 dead transitions. [2023-09-01 09:03:41,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 164 transitions, 758 flow [2023-09-01 09:03:41,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:03:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:03:41,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 678 transitions. [2023-09-01 09:03:41,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6848484848484848 [2023-09-01 09:03:41,554 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 678 transitions. [2023-09-01 09:03:41,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 678 transitions. [2023-09-01 09:03:41,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:41,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 678 transitions. [2023-09-01 09:03:41,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 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) [2023-09-01 09:03:41,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:41,559 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:41,561 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 188 flow. Second operand 5 states and 678 transitions. [2023-09-01 09:03:41,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 164 transitions, 758 flow [2023-09-01 09:03:41,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 164 transitions, 744 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:03:41,570 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 232 flow [2023-09-01 09:03:41,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-09-01 09:03:41,572 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-09-01 09:03:41,573 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 232 flow [2023-09-01 09:03:41,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2023-09-01 09:03:41,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:41,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:41,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:03:41,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:03:41,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:41,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1526376981, now seen corresponding path program 3 times [2023-09-01 09:03:41,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:41,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808640439] [2023-09-01 09:03:41,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:41,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:41,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:41,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808640439] [2023-09-01 09:03:41,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808640439] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:41,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:41,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:41,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940487467] [2023-09-01 09:03:41,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:41,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:03:41,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:41,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:03:41,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:03:41,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 198 [2023-09-01 09:03:41,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2023-09-01 09:03:41,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:41,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 198 [2023-09-01 09:03:41,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:42,600 INFO L130 PetriNetUnfolder]: 7591/12573 cut-off events. [2023-09-01 09:03:42,600 INFO L131 PetriNetUnfolder]: For 3307/3373 co-relation queries the response was YES. [2023-09-01 09:03:42,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27563 conditions, 12573 events. 7591/12573 cut-off events. For 3307/3373 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 84681 event pairs, 1435 based on Foata normal form. 130/10590 useless extension candidates. Maximal degree in co-relation 27553. Up to 3655 conditions per place. [2023-09-01 09:03:42,655 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 143 selfloop transitions, 11 changer transitions 3/177 dead transitions. [2023-09-01 09:03:42,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 177 transitions, 875 flow [2023-09-01 09:03:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:03:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:03:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 682 transitions. [2023-09-01 09:03:42,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2023-09-01 09:03:42,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 682 transitions. [2023-09-01 09:03:42,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 682 transitions. [2023-09-01 09:03:42,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:42,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 682 transitions. [2023-09-01 09:03:42,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 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) [2023-09-01 09:03:42,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:42,662 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:42,662 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 232 flow. Second operand 5 states and 682 transitions. [2023-09-01 09:03:42,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 177 transitions, 875 flow [2023-09-01 09:03:42,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 177 transitions, 875 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:03:42,674 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 326 flow [2023-09-01 09:03:42,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2023-09-01 09:03:42,675 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2023-09-01 09:03:42,675 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 326 flow [2023-09-01 09:03:42,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2023-09-01 09:03:42,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:42,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:42,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:03:42,676 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:03:42,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:42,677 INFO L85 PathProgramCache]: Analyzing trace with hash 617069377, now seen corresponding path program 4 times [2023-09-01 09:03:42,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:42,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278467800] [2023-09-01 09:03:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:42,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:42,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:42,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278467800] [2023-09-01 09:03:42,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278467800] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:42,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:42,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:42,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738882763] [2023-09-01 09:03:42,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:42,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:03:42,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:42,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:03:42,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:03:42,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 198 [2023-09-01 09:03:42,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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) [2023-09-01 09:03:42,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:42,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 198 [2023-09-01 09:03:42,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:43,674 INFO L130 PetriNetUnfolder]: 7636/12862 cut-off events. [2023-09-01 09:03:43,674 INFO L131 PetriNetUnfolder]: For 4633/4751 co-relation queries the response was YES. [2023-09-01 09:03:43,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28302 conditions, 12862 events. 7636/12862 cut-off events. For 4633/4751 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 89544 event pairs, 2344 based on Foata normal form. 472/11355 useless extension candidates. Maximal degree in co-relation 28288. Up to 6910 conditions per place. [2023-09-01 09:03:43,727 INFO L137 encePairwiseOnDemand]: 184/198 looper letters, 80 selfloop transitions, 11 changer transitions 24/141 dead transitions. [2023-09-01 09:03:43,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 141 transitions, 731 flow [2023-09-01 09:03:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:03:43,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:03:43,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 606 transitions. [2023-09-01 09:03:43,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6121212121212121 [2023-09-01 09:03:43,730 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 606 transitions. [2023-09-01 09:03:43,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 606 transitions. [2023-09-01 09:03:43,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:43,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 606 transitions. [2023-09-01 09:03:43,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 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) [2023-09-01 09:03:43,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:43,734 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:43,734 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 326 flow. Second operand 5 states and 606 transitions. [2023-09-01 09:03:43,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 141 transitions, 731 flow [2023-09-01 09:03:43,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 141 transitions, 731 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:03:43,746 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 419 flow [2023-09-01 09:03:43,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2023-09-01 09:03:43,747 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2023-09-01 09:03:43,747 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 419 flow [2023-09-01 09:03:43,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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) [2023-09-01 09:03:43,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:43,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:43,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:03:43,748 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:03:43,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:43,748 INFO L85 PathProgramCache]: Analyzing trace with hash -764077611, now seen corresponding path program 1 times [2023-09-01 09:03:43,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:43,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764247114] [2023-09-01 09:03:43,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:43,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:43,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:43,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764247114] [2023-09-01 09:03:43,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764247114] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:43,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:43,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:43,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036930653] [2023-09-01 09:03:43,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:43,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:03:43,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:43,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:03:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:03:43,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 198 [2023-09-01 09:03:43,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-09-01 09:03:43,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:43,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 198 [2023-09-01 09:03:43,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:44,634 INFO L130 PetriNetUnfolder]: 5654/9893 cut-off events. [2023-09-01 09:03:44,635 INFO L131 PetriNetUnfolder]: For 7034/7791 co-relation queries the response was YES. [2023-09-01 09:03:44,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25047 conditions, 9893 events. 5654/9893 cut-off events. For 7034/7791 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 68131 event pairs, 1970 based on Foata normal form. 366/9274 useless extension candidates. Maximal degree in co-relation 25029. Up to 5796 conditions per place. [2023-09-01 09:03:44,675 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 75 selfloop transitions, 9 changer transitions 7/127 dead transitions. [2023-09-01 09:03:44,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 127 transitions, 758 flow [2023-09-01 09:03:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:03:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:03:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 607 transitions. [2023-09-01 09:03:44,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6131313131313131 [2023-09-01 09:03:44,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 607 transitions. [2023-09-01 09:03:44,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 607 transitions. [2023-09-01 09:03:44,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:44,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 607 transitions. [2023-09-01 09:03:44,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.4) internal successors, (607), 5 states have internal predecessors, (607), 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) [2023-09-01 09:03:44,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:44,681 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:44,681 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 419 flow. Second operand 5 states and 607 transitions. [2023-09-01 09:03:44,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 127 transitions, 758 flow [2023-09-01 09:03:44,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 127 transitions, 711 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-09-01 09:03:44,698 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 446 flow [2023-09-01 09:03:44,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2023-09-01 09:03:44,699 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2023-09-01 09:03:44,699 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 446 flow [2023-09-01 09:03:44,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-09-01 09:03:44,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:44,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:44,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:03:44,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:03:44,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:44,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1395113562, now seen corresponding path program 1 times [2023-09-01 09:03:44,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:44,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100364764] [2023-09-01 09:03:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:44,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:44,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100364764] [2023-09-01 09:03:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100364764] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:44,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:44,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:44,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398387232] [2023-09-01 09:03:44,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:44,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:03:44,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:03:44,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:03:44,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 198 [2023-09-01 09:03:44,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-09-01 09:03:44,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:44,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 198 [2023-09-01 09:03:44,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:45,461 INFO L130 PetriNetUnfolder]: 5087/9432 cut-off events. [2023-09-01 09:03:45,461 INFO L131 PetriNetUnfolder]: For 7965/8558 co-relation queries the response was YES. [2023-09-01 09:03:45,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24961 conditions, 9432 events. 5087/9432 cut-off events. For 7965/8558 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 66145 event pairs, 1807 based on Foata normal form. 200/8697 useless extension candidates. Maximal degree in co-relation 24940. Up to 5567 conditions per place. [2023-09-01 09:03:45,505 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 77 selfloop transitions, 10 changer transitions 12/133 dead transitions. [2023-09-01 09:03:45,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 133 transitions, 785 flow [2023-09-01 09:03:45,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:03:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:03:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 610 transitions. [2023-09-01 09:03:45,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-09-01 09:03:45,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 610 transitions. [2023-09-01 09:03:45,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 610 transitions. [2023-09-01 09:03:45,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:45,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 610 transitions. [2023-09-01 09:03:45,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2023-09-01 09:03:45,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:45,513 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:45,513 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 446 flow. Second operand 5 states and 610 transitions. [2023-09-01 09:03:45,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 133 transitions, 785 flow [2023-09-01 09:03:45,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 133 transitions, 783 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-09-01 09:03:45,534 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 455 flow [2023-09-01 09:03:45,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=455, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2023-09-01 09:03:45,534 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2023-09-01 09:03:45,535 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 455 flow [2023-09-01 09:03:45,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-09-01 09:03:45,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:45,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:45,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:03:45,536 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:03:45,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:45,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1581251780, now seen corresponding path program 1 times [2023-09-01 09:03:45,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:45,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520529035] [2023-09-01 09:03:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:45,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:45,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:45,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520529035] [2023-09-01 09:03:45,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520529035] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:45,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:45,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:45,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547665601] [2023-09-01 09:03:45,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:45,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:03:45,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:45,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:03:45,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:03:45,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 198 [2023-09-01 09:03:45,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 455 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2023-09-01 09:03:45,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:45,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 198 [2023-09-01 09:03:45,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:46,126 INFO L130 PetriNetUnfolder]: 3450/6224 cut-off events. [2023-09-01 09:03:46,126 INFO L131 PetriNetUnfolder]: For 7225/7613 co-relation queries the response was YES. [2023-09-01 09:03:46,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18433 conditions, 6224 events. 3450/6224 cut-off events. For 7225/7613 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 38966 event pairs, 1116 based on Foata normal form. 180/5839 useless extension candidates. Maximal degree in co-relation 18408. Up to 3006 conditions per place. [2023-09-01 09:03:46,151 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 71 selfloop transitions, 6 changer transitions 49/149 dead transitions. [2023-09-01 09:03:46,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 149 transitions, 1003 flow [2023-09-01 09:03:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:03:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:03:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 632 transitions. [2023-09-01 09:03:46,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6383838383838384 [2023-09-01 09:03:46,155 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 632 transitions. [2023-09-01 09:03:46,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 632 transitions. [2023-09-01 09:03:46,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:46,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 632 transitions. [2023-09-01 09:03:46,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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) [2023-09-01 09:03:46,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:46,160 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:46,160 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 455 flow. Second operand 5 states and 632 transitions. [2023-09-01 09:03:46,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 149 transitions, 1003 flow [2023-09-01 09:03:46,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 149 transitions, 1001 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-09-01 09:03:46,182 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 450 flow [2023-09-01 09:03:46,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2023-09-01 09:03:46,185 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2023-09-01 09:03:46,185 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 450 flow [2023-09-01 09:03:46,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2023-09-01 09:03:46,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:46,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:46,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 09:03:46,186 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:03:46,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:46,186 INFO L85 PathProgramCache]: Analyzing trace with hash 411322496, now seen corresponding path program 2 times [2023-09-01 09:03:46,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:46,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332119486] [2023-09-01 09:03:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:46,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:46,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:46,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332119486] [2023-09-01 09:03:46,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332119486] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:46,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:46,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:46,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876229082] [2023-09-01 09:03:46,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:46,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:03:46,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:03:46,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:03:46,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 198 [2023-09-01 09:03:46,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2023-09-01 09:03:46,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:46,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 198 [2023-09-01 09:03:46,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:46,489 INFO L130 PetriNetUnfolder]: 1078/2139 cut-off events. [2023-09-01 09:03:46,489 INFO L131 PetriNetUnfolder]: For 3408/3610 co-relation queries the response was YES. [2023-09-01 09:03:46,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 2139 events. 1078/2139 cut-off events. For 3408/3610 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12273 event pairs, 250 based on Foata normal form. 170/2167 useless extension candidates. Maximal degree in co-relation 6616. Up to 647 conditions per place. [2023-09-01 09:03:46,498 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 0 selfloop transitions, 0 changer transitions 115/115 dead transitions. [2023-09-01 09:03:46,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 115 transitions, 768 flow [2023-09-01 09:03:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:03:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:03:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 616 transitions. [2023-09-01 09:03:46,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2023-09-01 09:03:46,501 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 616 transitions. [2023-09-01 09:03:46,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 616 transitions. [2023-09-01 09:03:46,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:46,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 616 transitions. [2023-09-01 09:03:46,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 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) [2023-09-01 09:03:46,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:46,506 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-09-01 09:03:46,506 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 450 flow. Second operand 5 states and 616 transitions. [2023-09-01 09:03:46,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 115 transitions, 768 flow [2023-09-01 09:03:46,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 115 transitions, 696 flow, removed 15 selfloop flow, removed 10 redundant places. [2023-09-01 09:03:46,519 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2023-09-01 09:03:46,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2023-09-01 09:03:46,519 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2023-09-01 09:03:46,519 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2023-09-01 09:03:46,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2023-09-01 09:03:46,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-09-01 09:03:46,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-09-01 09:03:46,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-09-01 09:03:46,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-09-01 09:03:46,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-09-01 09:03:46,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-09-01 09:03:46,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 09:03:46,524 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1] [2023-09-01 09:03:46,529 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:03:46,529 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:03:46,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:03:46 BasicIcfg [2023-09-01 09:03:46,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:03:46,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:03:46,532 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:03:46,532 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:03:46,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:03:37" (3/4) ... [2023-09-01 09:03:46,534 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:03:46,539 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-09-01 09:03:46,539 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-09-01 09:03:46,542 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 09:03:46,542 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 09:03:46,542 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:03:46,542 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:03:46,565 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:03:46,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:03:46,566 INFO L158 Benchmark]: Toolchain (without parser) took 10081.34ms. Allocated memory was 73.4MB in the beginning and 1.4GB in the end (delta: 1.4GB). Free memory was 49.2MB in the beginning and 539.2MB in the end (delta: -490.0MB). Peak memory consumption was 875.5MB. Max. memory is 16.1GB. [2023-09-01 09:03:46,566 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 50.5MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:03:46,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 519.80ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 49.0MB in the beginning and 69.9MB in the end (delta: -20.9MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2023-09-01 09:03:46,566 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.83ms. Allocated memory is still 96.5MB. Free memory was 69.9MB in the beginning and 67.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:03:46,567 INFO L158 Benchmark]: Boogie Preprocessor took 24.53ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 66.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:03:46,567 INFO L158 Benchmark]: RCFGBuilder took 462.85ms. Allocated memory is still 96.5MB. Free memory was 66.2MB in the beginning and 51.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 09:03:46,567 INFO L158 Benchmark]: TraceAbstraction took 9002.56ms. Allocated memory was 96.5MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 50.8MB in the beginning and 541.4MB in the end (delta: -490.6MB). Peak memory consumption was 852.0MB. Max. memory is 16.1GB. [2023-09-01 09:03:46,568 INFO L158 Benchmark]: Witness Printer took 33.33ms. Allocated memory is still 1.4GB. Free memory was 541.4MB in the beginning and 539.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:03:46,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 50.5MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 519.80ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 49.0MB in the beginning and 69.9MB in the end (delta: -20.9MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.83ms. Allocated memory is still 96.5MB. Free memory was 69.9MB in the beginning and 67.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.53ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 66.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 462.85ms. Allocated memory is still 96.5MB. Free memory was 66.2MB in the beginning and 51.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9002.56ms. Allocated memory was 96.5MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 50.8MB in the beginning and 541.4MB in the end (delta: -490.6MB). Peak memory consumption was 852.0MB. Max. memory is 16.1GB. * Witness Printer took 33.33ms. Allocated memory is still 1.4GB. Free memory was 541.4MB in the beginning and 539.2MB in the end (delta: 2.2MB). 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: 1.6s, 101 PlacesBefore, 53 PlacesAfterwards, 118 TransitionsBefore, 64 TransitionsAfterwards, 4988 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 69 TotalNumberOfCompositions, 14233 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5643, independent: 5307, independent conditional: 0, independent unconditional: 5307, dependent: 336, dependent conditional: 0, dependent unconditional: 336, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2194, independent: 2148, independent conditional: 0, independent unconditional: 2148, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5643, independent: 3159, independent conditional: 0, independent unconditional: 3159, dependent: 290, dependent conditional: 0, dependent unconditional: 290, unknown: 2194, unknown conditional: 0, unknown unconditional: 2194] , Statistics on independence cache: Total cache size (in pairs): 397, Positive cache size: 364, Positive conditional cache size: 0, Positive unconditional cache size: 364, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 764]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 684 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 566 mSDsluCounter, 94 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1749 IncrementalHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 57 mSDtfsCounter, 1749 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=455occurred in iteration=9, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 305 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 09:03:46,587 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