./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longer-1.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/triangular-longer-1.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 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --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 09:02:55,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:02:55,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:02:55,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:02:55,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:02:55,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:02:55,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:02:55,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:02:55,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:02:55,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:02:55,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:02:55,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:02:55,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:02:55,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:02:55,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:02:55,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:02:55,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:02:55,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:02:55,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:02:55,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:02:55,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:02:55,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:02:55,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:02:55,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:02:55,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:02:55,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:02:55,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:02:55,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:02:55,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:02:55,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:02:55,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:02:55,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:02:55,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:02:55,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:02:55,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:02:55,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:02:55,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:02:55,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:02:55,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:02:55,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:02:55,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:02:55,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:02:55,519 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:02:55,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:02:55,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:02:55,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:02:55,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:02:55,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:02:55,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:02:55,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:02:55,522 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:02:55,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:02:55,524 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:02:55,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:02:55,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:02:55,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:02:55,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:02:55,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:02:55,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:02:55,526 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:02:55,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:02:55,526 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:02:55,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:02:55,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:02:55,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:02:55,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:02:55,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:02:55,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:02:55,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:02:55,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:02:55,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:02:55,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:02:55,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:02:55,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:02:55,528 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:02:55,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:02:55,529 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:02:55,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:02:55,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:02:55,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:02:55,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:02:55,847 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:02:55,847 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:02:55,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-09-01 09:02:57,160 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:02:57,396 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:02:57,396 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-09-01 09:02:57,411 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75072cc6/474677d5bbda49f5b25ac555f1b43d91/FLAGbd3adbc95 [2023-09-01 09:02:57,424 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75072cc6/474677d5bbda49f5b25ac555f1b43d91 [2023-09-01 09:02:57,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:02:57,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:02:57,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:02:57,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:02:57,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:02:57,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31892360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57, skipping insertion in model container [2023-09-01 09:02:57,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:02:57,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:02:57,765 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/triangular-longer-1.i[30961,30974] [2023-09-01 09:02:57,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:02:57,779 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:02:57,843 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/triangular-longer-1.i[30961,30974] [2023-09-01 09:02:57,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:02:57,879 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:02:57,879 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:02:57,886 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:02:57,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57 WrapperNode [2023-09-01 09:02:57,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:02:57,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:02:57,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:02:57,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:02:57,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,950 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-09-01 09:02:57,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:02:57,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:02:57,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:02:57,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:02:57,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,995 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:57,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:02:58,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:02:58,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:02:58,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:02:58,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (1/1) ... [2023-09-01 09:02:58,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:02:58,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:02:58,038 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 09:02:58,057 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 09:02:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 09:02:58,072 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 09:02:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 09:02:58,073 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 09:02:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:02:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:02:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:02:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:02:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:02:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:02:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:02:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:02:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:02:58,075 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 09:02:58,214 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:02:58,216 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:02:58,363 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:02:58,369 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:02:58,384 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 09:02:58,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:02:58 BoogieIcfgContainer [2023-09-01 09:02:58,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:02:58,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:02:58,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:02:58,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:02:58,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:02:57" (1/3) ... [2023-09-01 09:02:58,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45feb323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:02:58, skipping insertion in model container [2023-09-01 09:02:58,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:02:57" (2/3) ... [2023-09-01 09:02:58,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45feb323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:02:58, skipping insertion in model container [2023-09-01 09:02:58,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:02:58" (3/3) ... [2023-09-01 09:02:58,407 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2023-09-01 09:02:58,423 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:02:58,431 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:02:58,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:02:58,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:02:58,529 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:02:58,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2023-09-01 09:02:58,628 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-09-01 09:02:58,628 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:02:58,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-09-01 09:02:58,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2023-09-01 09:02:58,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2023-09-01 09:02:58,645 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:02:58,663 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 64 transitions, 134 flow [2023-09-01 09:02:58,675 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 64 transitions, 134 flow [2023-09-01 09:02:58,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 134 flow [2023-09-01 09:02:58,688 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-09-01 09:02:58,688 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:02:58,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-09-01 09:02:58,690 INFO L119 LiptonReduction]: Number of co-enabled transitions 1078 [2023-09-01 09:03:00,605 INFO L134 LiptonReduction]: Checked pairs total: 999 [2023-09-01 09:03:00,606 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-09-01 09:03:00,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:03:00,624 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;@34c8e919, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:03:00,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 09:03:00,628 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2023-09-01 09:03:00,629 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:03:00,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:00,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 09:03:00,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:00,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash -776471266, now seen corresponding path program 1 times [2023-09-01 09:03:00,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:00,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999018178] [2023-09-01 09:03:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:00,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:01,139 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 09:03:01,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:01,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999018178] [2023-09-01 09:03:01,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999018178] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:01,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:01,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:03:01,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507887462] [2023-09-01 09:03:01,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:01,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:03:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:01,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:03:01,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:03:01,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 124 [2023-09-01 09:03:01,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 09:03:01,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:01,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 124 [2023-09-01 09:03:01,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:01,307 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2023-09-01 09:03:01,307 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:03:01,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-09-01 09:03:01,312 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-09-01 09:03:01,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-09-01 09:03:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:03:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:03:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2023-09-01 09:03:01,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4939516129032258 [2023-09-01 09:03:01,332 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 245 transitions. [2023-09-01 09:03:01,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 245 transitions. [2023-09-01 09:03:01,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:01,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 245 transitions. [2023-09-01 09:03:01,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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 09:03:01,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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 09:03:01,346 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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 09:03:01,348 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 245 transitions. [2023-09-01 09:03:01,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-09-01 09:03:01,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:03:01,352 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-09-01 09:03:01,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-09-01 09:03:01,358 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-09-01 09:03:01,359 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-09-01 09:03:01,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 09:03:01,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:01,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:01,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:03:01,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:01,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:01,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1135033148, now seen corresponding path program 1 times [2023-09-01 09:03:01,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:01,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907996961] [2023-09-01 09:03:01,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:01,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:01,469 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 09:03:01,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:01,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907996961] [2023-09-01 09:03:01,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907996961] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:01,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:01,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:03:01,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82154432] [2023-09-01 09:03:01,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:01,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:03:01,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:03:01,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:03:01,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:01,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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 09:03:01,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:01,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:01,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:01,587 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2023-09-01 09:03:01,587 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-09-01 09:03:01,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 654 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-09-01 09:03:01,590 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-09-01 09:03:01,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-09-01 09:03:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:03:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:03:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2023-09-01 09:03:01,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2023-09-01 09:03:01,593 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2023-09-01 09:03:01,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2023-09-01 09:03:01,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:01,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2023-09-01 09:03:01,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 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 09:03:01,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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 09:03:01,597 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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 09:03:01,597 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 356 transitions. [2023-09-01 09:03:01,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-09-01 09:03:01,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:03:01,599 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-09-01 09:03:01,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-09-01 09:03:01,600 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-09-01 09:03:01,601 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-09-01 09:03:01,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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 09:03:01,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:01,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:01,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:03:01,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:01,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:01,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1135047098, now seen corresponding path program 2 times [2023-09-01 09:03:01,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:01,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523442367] [2023-09-01 09:03:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:01,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:01,712 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 09:03:01,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:01,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523442367] [2023-09-01 09:03:01,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523442367] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:01,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:01,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:03:01,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606626342] [2023-09-01 09:03:01,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:01,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:03:01,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:01,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:03:01,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:03:01,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:01,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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 09:03:01,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:01,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:01,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:01,813 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2023-09-01 09:03:01,814 INFO L131 PetriNetUnfolder]: For 280/280 co-relation queries the response was YES. [2023-09-01 09:03:01,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 630 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2023-09-01 09:03:01,816 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-09-01 09:03:01,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2023-09-01 09:03:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:03:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:03:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 298 transitions. [2023-09-01 09:03:01,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806451612903226 [2023-09-01 09:03:01,818 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 298 transitions. [2023-09-01 09:03:01,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 298 transitions. [2023-09-01 09:03:01,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:01,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 298 transitions. [2023-09-01 09:03:01,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 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 09:03:01,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:03:01,822 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:03:01,822 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 298 transitions. [2023-09-01 09:03:01,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2023-09-01 09:03:01,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-09-01 09:03:01,826 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2023-09-01 09:03:01,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-09-01 09:03:01,827 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-09-01 09:03:01,827 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2023-09-01 09:03:01,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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 09:03:01,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:01,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:01,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:03:01,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:01,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:01,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1601852847, now seen corresponding path program 1 times [2023-09-01 09:03:01,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:01,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621800180] [2023-09-01 09:03:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:01,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:01,920 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 09:03:01,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:01,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621800180] [2023-09-01 09:03:01,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621800180] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:01,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:01,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:01,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449011861] [2023-09-01 09:03:01,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:01,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:03:01,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:01,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:03:01,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:03:01,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:01,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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 09:03:01,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:01,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:01,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:02,094 INFO L130 PetriNetUnfolder]: 126/219 cut-off events. [2023-09-01 09:03:02,094 INFO L131 PetriNetUnfolder]: For 533/533 co-relation queries the response was YES. [2023-09-01 09:03:02,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 219 events. 126/219 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 706 event pairs, 19 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 772. Up to 86 conditions per place. [2023-09-01 09:03:02,096 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 32 selfloop transitions, 16 changer transitions 11/59 dead transitions. [2023-09-01 09:03:02,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 425 flow [2023-09-01 09:03:02,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:03:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:03:02,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 529 transitions. [2023-09-01 09:03:02,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47401433691756273 [2023-09-01 09:03:02,099 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 529 transitions. [2023-09-01 09:03:02,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 529 transitions. [2023-09-01 09:03:02,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:02,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 529 transitions. [2023-09-01 09:03:02,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.77777777777778) internal successors, (529), 9 states have internal predecessors, (529), 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 09:03:02,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 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 09:03:02,104 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 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 09:03:02,104 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 9 states and 529 transitions. [2023-09-01 09:03:02,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 425 flow [2023-09-01 09:03:02,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 388 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-09-01 09:03:02,115 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 251 flow [2023-09-01 09:03:02,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-09-01 09:03:02,116 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-09-01 09:03:02,116 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 251 flow [2023-09-01 09:03:02,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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 09:03:02,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:02,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:02,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:03:02,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:02,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1601722647, now seen corresponding path program 2 times [2023-09-01 09:03:02,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:02,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477278263] [2023-09-01 09:03:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:02,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:02,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:02,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477278263] [2023-09-01 09:03:02,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477278263] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:02,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:02,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:02,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911167137] [2023-09-01 09:03:02,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:02,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:03:02,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:02,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:03:02,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:03:02,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:02,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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 09:03:02,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:02,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:02,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:02,362 INFO L130 PetriNetUnfolder]: 162/283 cut-off events. [2023-09-01 09:03:02,363 INFO L131 PetriNetUnfolder]: For 789/789 co-relation queries the response was YES. [2023-09-01 09:03:02,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 283 events. 162/283 cut-off events. For 789/789 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 955 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1066. Up to 77 conditions per place. [2023-09-01 09:03:02,365 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 38 selfloop transitions, 20 changer transitions 3/61 dead transitions. [2023-09-01 09:03:02,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 497 flow [2023-09-01 09:03:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:03:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:03:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2023-09-01 09:03:02,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737903225806452 [2023-09-01 09:03:02,368 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2023-09-01 09:03:02,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2023-09-01 09:03:02,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:02,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2023-09-01 09:03:02,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 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 09:03:02,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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 09:03:02,371 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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 09:03:02,371 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 251 flow. Second operand 8 states and 470 transitions. [2023-09-01 09:03:02,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 497 flow [2023-09-01 09:03:02,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 467 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-09-01 09:03:02,376 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 344 flow [2023-09-01 09:03:02,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-09-01 09:03:02,377 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 33 predicate places. [2023-09-01 09:03:02,378 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 344 flow [2023-09-01 09:03:02,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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 09:03:02,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:02,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:02,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:03:02,379 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:02,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:02,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1572215607, now seen corresponding path program 3 times [2023-09-01 09:03:02,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:02,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326362749] [2023-09-01 09:03:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:02,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:02,501 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 09:03:02,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:02,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326362749] [2023-09-01 09:03:02,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326362749] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:02,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:03:02,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:03:02,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643133365] [2023-09-01 09:03:02,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:02,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:03:02,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:02,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:03:02,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:03:02,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:02,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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 09:03:02,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:02,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:02,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:02,670 INFO L130 PetriNetUnfolder]: 158/275 cut-off events. [2023-09-01 09:03:02,670 INFO L131 PetriNetUnfolder]: For 1250/1250 co-relation queries the response was YES. [2023-09-01 09:03:02,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 275 events. 158/275 cut-off events. For 1250/1250 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 935 event pairs, 18 based on Foata normal form. 8/283 useless extension candidates. Maximal degree in co-relation 1225. Up to 65 conditions per place. [2023-09-01 09:03:02,673 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 28 selfloop transitions, 25 changer transitions 10/63 dead transitions. [2023-09-01 09:03:02,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 616 flow [2023-09-01 09:03:02,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:03:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:03:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 469 transitions. [2023-09-01 09:03:02,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727822580645161 [2023-09-01 09:03:02,675 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 469 transitions. [2023-09-01 09:03:02,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 469 transitions. [2023-09-01 09:03:02,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:02,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 469 transitions. [2023-09-01 09:03:02,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.625) internal successors, (469), 8 states have internal predecessors, (469), 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 09:03:02,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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 09:03:02,679 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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 09:03:02,679 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 344 flow. Second operand 8 states and 469 transitions. [2023-09-01 09:03:02,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 616 flow [2023-09-01 09:03:02,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 581 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-09-01 09:03:02,686 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 437 flow [2023-09-01 09:03:02,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=437, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-09-01 09:03:02,689 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 40 predicate places. [2023-09-01 09:03:02,689 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 437 flow [2023-09-01 09:03:02,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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 09:03:02,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:02,691 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:02,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:03:02,692 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:02,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:02,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1868187119, now seen corresponding path program 4 times [2023-09-01 09:03:02,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:02,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28574734] [2023-09-01 09:03:02,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:02,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:02,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:02,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28574734] [2023-09-01 09:03:02,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28574734] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:02,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831015618] [2023-09-01 09:03:02,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 09:03:02,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:02,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:02,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:02,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 09:03:02,883 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 09:03:02,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:02,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 09:03:02,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:02,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:03,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831015618] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:03,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:03,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-09-01 09:03:03,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809501459] [2023-09-01 09:03:03,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:03,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 09:03:03,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 09:03:03,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-09-01 09:03:03,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:03,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 437 flow. Second operand has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 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 09:03:03,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:03,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:03,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:03,381 INFO L130 PetriNetUnfolder]: 182/323 cut-off events. [2023-09-01 09:03:03,381 INFO L131 PetriNetUnfolder]: For 2474/2474 co-relation queries the response was YES. [2023-09-01 09:03:03,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 323 events. 182/323 cut-off events. For 2474/2474 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1094 event pairs, 41 based on Foata normal form. 24/347 useless extension candidates. Maximal degree in co-relation 1574. Up to 181 conditions per place. [2023-09-01 09:03:03,384 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 45 selfloop transitions, 17 changer transitions 19/81 dead transitions. [2023-09-01 09:03:03,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 81 transitions, 873 flow [2023-09-01 09:03:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 09:03:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 09:03:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 701 transitions. [2023-09-01 09:03:03,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47110215053763443 [2023-09-01 09:03:03,387 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 701 transitions. [2023-09-01 09:03:03,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 701 transitions. [2023-09-01 09:03:03,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:03,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 701 transitions. [2023-09-01 09:03:03,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 58.416666666666664) internal successors, (701), 12 states have internal predecessors, (701), 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 09:03:03,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 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 09:03:03,392 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 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 09:03:03,392 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 437 flow. Second operand 12 states and 701 transitions. [2023-09-01 09:03:03,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 81 transitions, 873 flow [2023-09-01 09:03:03,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 820 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-09-01 09:03:03,400 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 544 flow [2023-09-01 09:03:03,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=544, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2023-09-01 09:03:03,401 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 52 predicate places. [2023-09-01 09:03:03,401 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 544 flow [2023-09-01 09:03:03,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 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 09:03:03,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:03,402 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:03,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:03,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:03,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:03,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1881593069, now seen corresponding path program 5 times [2023-09-01 09:03:03,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:03,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469055333] [2023-09-01 09:03:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:03,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:03,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:03,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469055333] [2023-09-01 09:03:03,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469055333] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:03,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400587939] [2023-09-01 09:03:03,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 09:03:03,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:03,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:03,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:03,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 09:03:03,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 09:03:03,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:03,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 09:03:03,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:03,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:04,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400587939] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:04,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:04,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 09:03:04,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622276408] [2023-09-01 09:03:04,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:04,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 09:03:04,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:04,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 09:03:04,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-09-01 09:03:04,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:04,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 544 flow. Second operand has 13 states, 13 states have (on average 54.92307692307692) internal successors, (714), 13 states have internal predecessors, (714), 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 09:03:04,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:04,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:04,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:04,404 INFO L130 PetriNetUnfolder]: 244/439 cut-off events. [2023-09-01 09:03:04,404 INFO L131 PetriNetUnfolder]: For 6692/6692 co-relation queries the response was YES. [2023-09-01 09:03:04,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 439 events. 244/439 cut-off events. For 6692/6692 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1682 event pairs, 30 based on Foata normal form. 28/467 useless extension candidates. Maximal degree in co-relation 2476. Up to 128 conditions per place. [2023-09-01 09:03:04,408 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 46 selfloop transitions, 42 changer transitions 29/117 dead transitions. [2023-09-01 09:03:04,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 1405 flow [2023-09-01 09:03:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 09:03:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 09:03:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1051 transitions. [2023-09-01 09:03:04,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47087813620071683 [2023-09-01 09:03:04,413 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1051 transitions. [2023-09-01 09:03:04,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1051 transitions. [2023-09-01 09:03:04,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:04,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1051 transitions. [2023-09-01 09:03:04,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.388888888888886) internal successors, (1051), 18 states have internal predecessors, (1051), 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 09:03:04,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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 09:03:04,420 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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 09:03:04,420 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 544 flow. Second operand 18 states and 1051 transitions. [2023-09-01 09:03:04,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 1405 flow [2023-09-01 09:03:04,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 117 transitions, 1265 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-09-01 09:03:04,437 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 898 flow [2023-09-01 09:03:04,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=898, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2023-09-01 09:03:04,439 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 74 predicate places. [2023-09-01 09:03:04,440 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 898 flow [2023-09-01 09:03:04,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.92307692307692) internal successors, (714), 13 states have internal predecessors, (714), 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 09:03:04,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:04,441 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:04,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 09:03:04,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-09-01 09:03:04,647 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:04,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1657155026, now seen corresponding path program 6 times [2023-09-01 09:03:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:04,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640489880] [2023-09-01 09:03:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:04,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:04,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:04,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640489880] [2023-09-01 09:03:04,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640489880] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:04,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792387630] [2023-09-01 09:03:04,756 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 09:03:04,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:04,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:04,757 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:04,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 09:03:04,827 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 09:03:04,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:04,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 09:03:04,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:04,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:04,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792387630] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:04,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:04,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 09:03:04,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366152908] [2023-09-01 09:03:04,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:04,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 09:03:04,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:04,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 09:03:04,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-09-01 09:03:05,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:05,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 898 flow. Second operand has 14 states, 14 states have (on average 54.714285714285715) internal successors, (766), 14 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:03:05,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:05,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:05,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:05,289 INFO L130 PetriNetUnfolder]: 328/599 cut-off events. [2023-09-01 09:03:05,289 INFO L131 PetriNetUnfolder]: For 14932/14932 co-relation queries the response was YES. [2023-09-01 09:03:05,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4413 conditions, 599 events. 328/599 cut-off events. For 14932/14932 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2510 event pairs, 23 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 4366. Up to 204 conditions per place. [2023-09-01 09:03:05,295 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 56 selfloop transitions, 58 changer transitions 19/133 dead transitions. [2023-09-01 09:03:05,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 2133 flow [2023-09-01 09:03:05,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 09:03:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 09:03:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1046 transitions. [2023-09-01 09:03:05,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46863799283154123 [2023-09-01 09:03:05,299 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1046 transitions. [2023-09-01 09:03:05,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1046 transitions. [2023-09-01 09:03:05,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:05,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1046 transitions. [2023-09-01 09:03:05,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.111111111111114) internal successors, (1046), 18 states have internal predecessors, (1046), 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 09:03:05,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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 09:03:05,306 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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 09:03:05,306 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 898 flow. Second operand 18 states and 1046 transitions. [2023-09-01 09:03:05,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 133 transitions, 2133 flow [2023-09-01 09:03:05,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 133 transitions, 1847 flow, removed 129 selfloop flow, removed 7 redundant places. [2023-09-01 09:03:05,358 INFO L231 Difference]: Finished difference. Result has 110 places, 80 transitions, 1254 flow [2023-09-01 09:03:05,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1254, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2023-09-01 09:03:05,359 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 92 predicate places. [2023-09-01 09:03:05,359 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 1254 flow [2023-09-01 09:03:05,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 54.714285714285715) internal successors, (766), 14 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:03:05,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:05,360 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:05,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:05,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:05,566 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:05,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:05,567 INFO L85 PathProgramCache]: Analyzing trace with hash 929897188, now seen corresponding path program 7 times [2023-09-01 09:03:05,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:05,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057860714] [2023-09-01 09:03:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:05,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:05,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:05,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057860714] [2023-09-01 09:03:05,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057860714] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:05,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017213767] [2023-09-01 09:03:05,676 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 09:03:05,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:05,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:05,678 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:05,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 09:03:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:05,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 09:03:05,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:05,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:05,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017213767] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:05,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:05,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 09:03:05,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317714934] [2023-09-01 09:03:05,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:05,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 09:03:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 09:03:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-09-01 09:03:05,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:05,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 1254 flow. Second operand has 14 states, 14 states have (on average 54.785714285714285) internal successors, (767), 14 states have internal predecessors, (767), 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 09:03:05,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:05,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:05,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:06,364 INFO L130 PetriNetUnfolder]: 388/707 cut-off events. [2023-09-01 09:03:06,364 INFO L131 PetriNetUnfolder]: For 28896/28896 co-relation queries the response was YES. [2023-09-01 09:03:06,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5907 conditions, 707 events. 388/707 cut-off events. For 28896/28896 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3077 event pairs, 12 based on Foata normal form. 28/735 useless extension candidates. Maximal degree in co-relation 5852. Up to 243 conditions per place. [2023-09-01 09:03:06,372 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 46 selfloop transitions, 84 changer transitions 38/168 dead transitions. [2023-09-01 09:03:06,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 168 transitions, 3020 flow [2023-09-01 09:03:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-09-01 09:03:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-09-01 09:03:06,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1282 transitions. [2023-09-01 09:03:06,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46994134897360706 [2023-09-01 09:03:06,378 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1282 transitions. [2023-09-01 09:03:06,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1282 transitions. [2023-09-01 09:03:06,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:06,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1282 transitions. [2023-09-01 09:03:06,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.27272727272727) internal successors, (1282), 22 states have internal predecessors, (1282), 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 09:03:06,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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 09:03:06,388 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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 09:03:06,388 INFO L175 Difference]: Start difference. First operand has 110 places, 80 transitions, 1254 flow. Second operand 22 states and 1282 transitions. [2023-09-01 09:03:06,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 168 transitions, 3020 flow [2023-09-01 09:03:06,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 168 transitions, 2448 flow, removed 251 selfloop flow, removed 12 redundant places. [2023-09-01 09:03:06,429 INFO L231 Difference]: Finished difference. Result has 130 places, 101 transitions, 1724 flow [2023-09-01 09:03:06,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1724, PETRI_PLACES=130, PETRI_TRANSITIONS=101} [2023-09-01 09:03:06,430 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 112 predicate places. [2023-09-01 09:03:06,431 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 101 transitions, 1724 flow [2023-09-01 09:03:06,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 54.785714285714285) internal successors, (767), 14 states have internal predecessors, (767), 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 09:03:06,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:06,431 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:06,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:06,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:06,638 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:06,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:06,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1150765664, now seen corresponding path program 8 times [2023-09-01 09:03:06,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:06,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408434659] [2023-09-01 09:03:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:06,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:06,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:06,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408434659] [2023-09-01 09:03:06,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408434659] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:06,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078303377] [2023-09-01 09:03:06,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 09:03:06,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:06,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:06,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:06,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 09:03:06,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 09:03:06,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:06,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 09:03:06,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:06,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:07,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078303377] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:07,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:07,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-09-01 09:03:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769320289] [2023-09-01 09:03:07,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:07,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-09-01 09:03:07,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:07,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-09-01 09:03:07,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-09-01 09:03:07,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:07,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 101 transitions, 1724 flow. Second operand has 22 states, 22 states have (on average 54.5) internal successors, (1199), 22 states have internal predecessors, (1199), 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 09:03:07,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:07,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:07,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:07,972 INFO L130 PetriNetUnfolder]: 536/955 cut-off events. [2023-09-01 09:03:07,973 INFO L131 PetriNetUnfolder]: For 45023/45023 co-relation queries the response was YES. [2023-09-01 09:03:07,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8855 conditions, 955 events. 536/955 cut-off events. For 45023/45023 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4100 event pairs, 15 based on Foata normal form. 36/991 useless extension candidates. Maximal degree in co-relation 8792. Up to 335 conditions per place. [2023-09-01 09:03:07,983 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2023-09-01 09:03:07,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 247 transitions, 4988 flow [2023-09-01 09:03:07,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-09-01 09:03:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-09-01 09:03:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2090 transitions. [2023-09-01 09:03:07,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681899641577061 [2023-09-01 09:03:07,987 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2090 transitions. [2023-09-01 09:03:07,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2090 transitions. [2023-09-01 09:03:07,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:07,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2090 transitions. [2023-09-01 09:03:07,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 58.05555555555556) internal successors, (2090), 36 states have internal predecessors, (2090), 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 09:03:07,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 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 09:03:07,998 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 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 09:03:07,999 INFO L175 Difference]: Start difference. First operand has 130 places, 101 transitions, 1724 flow. Second operand 36 states and 2090 transitions. [2023-09-01 09:03:07,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 247 transitions, 4988 flow [2023-09-01 09:03:08,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 247 transitions, 4352 flow, removed 281 selfloop flow, removed 14 redundant places. [2023-09-01 09:03:08,059 INFO L231 Difference]: Finished difference. Result has 169 places, 138 transitions, 2762 flow [2023-09-01 09:03:08,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2762, PETRI_PLACES=169, PETRI_TRANSITIONS=138} [2023-09-01 09:03:08,059 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 151 predicate places. [2023-09-01 09:03:08,060 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 138 transitions, 2762 flow [2023-09-01 09:03:08,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 54.5) internal successors, (1199), 22 states have internal predecessors, (1199), 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 09:03:08,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:08,060 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:08,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:08,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-09-01 09:03:08,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:08,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:08,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2052641735, now seen corresponding path program 9 times [2023-09-01 09:03:08,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:08,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423648917] [2023-09-01 09:03:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:08,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:08,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:08,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423648917] [2023-09-01 09:03:08,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423648917] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:08,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753856290] [2023-09-01 09:03:08,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 09:03:08,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:08,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:08,551 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:08,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 09:03:08,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-09-01 09:03:08,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:08,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 09:03:08,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:08,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:08,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753856290] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:08,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:08,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2023-09-01 09:03:08,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006651007] [2023-09-01 09:03:08,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:08,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-09-01 09:03:08,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:08,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-09-01 09:03:08,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-09-01 09:03:09,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:09,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 138 transitions, 2762 flow. Second operand has 26 states, 26 states have (on average 54.46153846153846) internal successors, (1416), 26 states have internal predecessors, (1416), 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 09:03:09,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:09,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:09,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:09,744 INFO L130 PetriNetUnfolder]: 664/1211 cut-off events. [2023-09-01 09:03:09,744 INFO L131 PetriNetUnfolder]: For 96771/96771 co-relation queries the response was YES. [2023-09-01 09:03:09,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13940 conditions, 1211 events. 664/1211 cut-off events. For 96771/96771 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5484 event pairs, 102 based on Foata normal form. 32/1243 useless extension candidates. Maximal degree in co-relation 13864. Up to 463 conditions per place. [2023-09-01 09:03:09,762 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 106 selfloop transitions, 96 changer transitions 53/255 dead transitions. [2023-09-01 09:03:09,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 255 transitions, 6364 flow [2023-09-01 09:03:09,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-09-01 09:03:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-09-01 09:03:09,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1674 transitions. [2023-09-01 09:03:09,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2023-09-01 09:03:09,765 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1674 transitions. [2023-09-01 09:03:09,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1674 transitions. [2023-09-01 09:03:09,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:09,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1674 transitions. [2023-09-01 09:03:09,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 57.724137931034484) internal successors, (1674), 29 states have internal predecessors, (1674), 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 09:03:09,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 124.0) internal successors, (3720), 30 states have internal predecessors, (3720), 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 09:03:09,775 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 124.0) internal successors, (3720), 30 states have internal predecessors, (3720), 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 09:03:09,775 INFO L175 Difference]: Start difference. First operand has 169 places, 138 transitions, 2762 flow. Second operand 29 states and 1674 transitions. [2023-09-01 09:03:09,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 255 transitions, 6364 flow [2023-09-01 09:03:10,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 255 transitions, 4882 flow, removed 710 selfloop flow, removed 13 redundant places. [2023-09-01 09:03:10,005 INFO L231 Difference]: Finished difference. Result has 194 places, 170 transitions, 3113 flow [2023-09-01 09:03:10,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3113, PETRI_PLACES=194, PETRI_TRANSITIONS=170} [2023-09-01 09:03:10,006 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 176 predicate places. [2023-09-01 09:03:10,006 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 170 transitions, 3113 flow [2023-09-01 09:03:10,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 54.46153846153846) internal successors, (1416), 26 states have internal predecessors, (1416), 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 09:03:10,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:10,007 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:10,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:10,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:10,215 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:10,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:10,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1437345109, now seen corresponding path program 10 times [2023-09-01 09:03:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:10,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745937176] [2023-09-01 09:03:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:10,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:10,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:10,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745937176] [2023-09-01 09:03:10,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745937176] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:10,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884496611] [2023-09-01 09:03:10,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 09:03:10,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:10,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:10,457 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:10,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 09:03:10,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 09:03:10,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:10,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 09:03:10,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:10,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:10,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884496611] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:10,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:10,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 28 [2023-09-01 09:03:10,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846529358] [2023-09-01 09:03:10,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:10,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 09:03:10,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 09:03:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2023-09-01 09:03:11,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:11,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 170 transitions, 3113 flow. Second operand has 30 states, 30 states have (on average 54.4) internal successors, (1632), 30 states have internal predecessors, (1632), 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 09:03:11,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:11,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:11,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:11,869 INFO L130 PetriNetUnfolder]: 808/1483 cut-off events. [2023-09-01 09:03:11,869 INFO L131 PetriNetUnfolder]: For 155488/155488 co-relation queries the response was YES. [2023-09-01 09:03:11,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17184 conditions, 1483 events. 808/1483 cut-off events. For 155488/155488 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6848 event pairs, 44 based on Foata normal form. 32/1515 useless extension candidates. Maximal degree in co-relation 17102. Up to 591 conditions per place. [2023-09-01 09:03:11,891 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 73 selfloop transitions, 173 changer transitions 67/313 dead transitions. [2023-09-01 09:03:11,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 313 transitions, 7237 flow [2023-09-01 09:03:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-09-01 09:03:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-09-01 09:03:11,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2080 transitions. [2023-09-01 09:03:11,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659498207885305 [2023-09-01 09:03:11,895 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2080 transitions. [2023-09-01 09:03:11,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2080 transitions. [2023-09-01 09:03:11,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:11,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2080 transitions. [2023-09-01 09:03:11,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 57.77777777777778) internal successors, (2080), 36 states have internal predecessors, (2080), 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 09:03:11,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 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 09:03:11,906 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 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 09:03:11,906 INFO L175 Difference]: Start difference. First operand has 194 places, 170 transitions, 3113 flow. Second operand 36 states and 2080 transitions. [2023-09-01 09:03:11,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 313 transitions, 7237 flow [2023-09-01 09:03:12,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 313 transitions, 6565 flow, removed 304 selfloop flow, removed 11 redundant places. [2023-09-01 09:03:12,129 INFO L231 Difference]: Finished difference. Result has 231 places, 207 transitions, 4118 flow [2023-09-01 09:03:12,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2633, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4118, PETRI_PLACES=231, PETRI_TRANSITIONS=207} [2023-09-01 09:03:12,130 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 213 predicate places. [2023-09-01 09:03:12,130 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 207 transitions, 4118 flow [2023-09-01 09:03:12,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 54.4) internal successors, (1632), 30 states have internal predecessors, (1632), 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 09:03:12,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:12,131 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:12,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:12,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:12,332 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:12,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:12,332 INFO L85 PathProgramCache]: Analyzing trace with hash -162127443, now seen corresponding path program 11 times [2023-09-01 09:03:12,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:12,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406962458] [2023-09-01 09:03:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:12,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:12,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:12,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406962458] [2023-09-01 09:03:12,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406962458] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:12,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053816482] [2023-09-01 09:03:12,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 09:03:12,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:12,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:12,613 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:12,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 09:03:12,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-09-01 09:03:12,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:12,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 09:03:12,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:12,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:12,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053816482] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:12,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:12,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2023-09-01 09:03:12,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957477745] [2023-09-01 09:03:12,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:12,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-09-01 09:03:12,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:12,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-09-01 09:03:12,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-09-01 09:03:12,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:12,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 207 transitions, 4118 flow. Second operand has 26 states, 26 states have (on average 54.46153846153846) internal successors, (1416), 26 states have internal predecessors, (1416), 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 09:03:12,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:12,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:12,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:14,062 INFO L130 PetriNetUnfolder]: 928/1687 cut-off events. [2023-09-01 09:03:14,063 INFO L131 PetriNetUnfolder]: For 235833/235833 co-relation queries the response was YES. [2023-09-01 09:03:14,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22177 conditions, 1687 events. 928/1687 cut-off events. For 235833/235833 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7743 event pairs, 16 based on Foata normal form. 32/1719 useless extension candidates. Maximal degree in co-relation 22081. Up to 675 conditions per place. [2023-09-01 09:03:14,086 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 76 selfloop transitions, 214 changer transitions 75/365 dead transitions. [2023-09-01 09:03:14,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 365 transitions, 9590 flow [2023-09-01 09:03:14,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-09-01 09:03:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-09-01 09:03:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2545 transitions. [2023-09-01 09:03:14,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664589442815249 [2023-09-01 09:03:14,090 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2545 transitions. [2023-09-01 09:03:14,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2545 transitions. [2023-09-01 09:03:14,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:14,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2545 transitions. [2023-09-01 09:03:14,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 57.84090909090909) internal successors, (2545), 44 states have internal predecessors, (2545), 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 09:03:14,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 124.0) internal successors, (5580), 45 states have internal predecessors, (5580), 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 09:03:14,102 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 124.0) internal successors, (5580), 45 states have internal predecessors, (5580), 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 09:03:14,103 INFO L175 Difference]: Start difference. First operand has 231 places, 207 transitions, 4118 flow. Second operand 44 states and 2545 transitions. [2023-09-01 09:03:14,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 365 transitions, 9590 flow [2023-09-01 09:03:14,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 365 transitions, 8810 flow, removed 301 selfloop flow, removed 17 redundant places. [2023-09-01 09:03:14,415 INFO L231 Difference]: Finished difference. Result has 273 places, 234 transitions, 5349 flow [2023-09-01 09:03:14,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5349, PETRI_PLACES=273, PETRI_TRANSITIONS=234} [2023-09-01 09:03:14,415 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 255 predicate places. [2023-09-01 09:03:14,416 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 234 transitions, 5349 flow [2023-09-01 09:03:14,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 54.46153846153846) internal successors, (1416), 26 states have internal predecessors, (1416), 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 09:03:14,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:14,416 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:14,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:14,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 09:03:14,617 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:14,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:14,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1774196837, now seen corresponding path program 12 times [2023-09-01 09:03:14,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:14,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387873557] [2023-09-01 09:03:14,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:14,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:14,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:14,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387873557] [2023-09-01 09:03:14,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387873557] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:14,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112140391] [2023-09-01 09:03:14,918 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 09:03:14,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:14,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:14,921 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:14,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 09:03:15,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-09-01 09:03:15,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 09:03:15,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 09:03:15,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:15,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 09:03:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:15,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112140391] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 09:03:15,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 09:03:15,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 28 [2023-09-01 09:03:15,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114010263] [2023-09-01 09:03:15,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 09:03:15,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 09:03:15,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:15,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 09:03:15,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2023-09-01 09:03:15,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-09-01 09:03:15,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 234 transitions, 5349 flow. Second operand has 30 states, 30 states have (on average 54.4) internal successors, (1632), 30 states have internal predecessors, (1632), 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 09:03:15,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:15,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-09-01 09:03:15,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:16,872 INFO L130 PetriNetUnfolder]: 1040/1887 cut-off events. [2023-09-01 09:03:16,873 INFO L131 PetriNetUnfolder]: For 379876/379876 co-relation queries the response was YES. [2023-09-01 09:03:16,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28674 conditions, 1887 events. 1040/1887 cut-off events. For 379876/379876 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8809 event pairs, 17 based on Foata normal form. 28/1915 useless extension candidates. Maximal degree in co-relation 28562. Up to 755 conditions per place. [2023-09-01 09:03:16,899 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 79 selfloop transitions, 247 changer transitions 96/422 dead transitions. [2023-09-01 09:03:16,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 422 transitions, 12533 flow [2023-09-01 09:03:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-09-01 09:03:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-09-01 09:03:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2949 transitions. [2023-09-01 09:03:16,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663187855787476 [2023-09-01 09:03:16,905 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2949 transitions. [2023-09-01 09:03:16,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2949 transitions. [2023-09-01 09:03:16,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:16,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2949 transitions. [2023-09-01 09:03:16,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 57.8235294117647) internal successors, (2949), 51 states have internal predecessors, (2949), 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 09:03:16,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 124.0) internal successors, (6448), 52 states have internal predecessors, (6448), 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 09:03:16,918 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 124.0) internal successors, (6448), 52 states have internal predecessors, (6448), 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 09:03:16,918 INFO L175 Difference]: Start difference. First operand has 273 places, 234 transitions, 5349 flow. Second operand 51 states and 2949 transitions. [2023-09-01 09:03:16,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 422 transitions, 12533 flow [2023-09-01 09:03:17,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 422 transitions, 10486 flow, removed 883 selfloop flow, removed 28 redundant places. [2023-09-01 09:03:17,563 INFO L231 Difference]: Finished difference. Result has 305 places, 266 transitions, 5711 flow [2023-09-01 09:03:17,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3922, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=5711, PETRI_PLACES=305, PETRI_TRANSITIONS=266} [2023-09-01 09:03:17,564 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 287 predicate places. [2023-09-01 09:03:17,564 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 266 transitions, 5711 flow [2023-09-01 09:03:17,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 54.4) internal successors, (1632), 30 states have internal predecessors, (1632), 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 09:03:17,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:03:17,565 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:03:17,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:17,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 09:03:17,769 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:03:17,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:03:17,769 INFO L85 PathProgramCache]: Analyzing trace with hash -984748001, now seen corresponding path program 13 times [2023-09-01 09:03:17,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:03:17,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752390833] [2023-09-01 09:03:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:03:17,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:03:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:17,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:03:17,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752390833] [2023-09-01 09:03:17,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752390833] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 09:03:17,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842416528] [2023-09-01 09:03:17,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 09:03:17,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 09:03:17,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:03:17,931 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 09:03:17,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 09:03:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:03:18,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 09:03:18,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 09:03:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:03:18,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 09:03:18,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842416528] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:03:18,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 09:03:18,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2023-09-01 09:03:18,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819851731] [2023-09-01 09:03:18,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:03:18,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 09:03:18,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:03:18,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 09:03:18,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-09-01 09:03:18,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 124 [2023-09-01 09:03:18,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 266 transitions, 5711 flow. Second operand has 13 states, 13 states have (on average 58.23076923076923) internal successors, (757), 13 states have internal predecessors, (757), 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 09:03:18,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:03:18,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 124 [2023-09-01 09:03:18,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:03:20,059 INFO L130 PetriNetUnfolder]: 4503/7073 cut-off events. [2023-09-01 09:03:20,060 INFO L131 PetriNetUnfolder]: For 1559366/1559366 co-relation queries the response was YES. [2023-09-01 09:03:20,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100155 conditions, 7073 events. 4503/7073 cut-off events. For 1559366/1559366 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 38784 event pairs, 102 based on Foata normal form. 380/7453 useless extension candidates. Maximal degree in co-relation 100036. Up to 3450 conditions per place. [2023-09-01 09:03:20,153 INFO L137 encePairwiseOnDemand]: 121/124 looper letters, 0 selfloop transitions, 0 changer transitions 1332/1332 dead transitions. [2023-09-01 09:03:20,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1332 transitions, 27305 flow [2023-09-01 09:03:20,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 09:03:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 09:03:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 825 transitions. [2023-09-01 09:03:20,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117866004962779 [2023-09-01 09:03:20,156 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 825 transitions. [2023-09-01 09:03:20,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 825 transitions. [2023-09-01 09:03:20,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:03:20,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 825 transitions. [2023-09-01 09:03:20,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.46153846153846) internal successors, (825), 13 states have internal predecessors, (825), 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 09:03:20,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 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 09:03:20,161 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 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 09:03:20,162 INFO L175 Difference]: Start difference. First operand has 305 places, 266 transitions, 5711 flow. Second operand 13 states and 825 transitions. [2023-09-01 09:03:20,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1332 transitions, 27305 flow [2023-09-01 09:03:21,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 1332 transitions, 24302 flow, removed 301 selfloop flow, removed 44 redundant places. [2023-09-01 09:03:21,998 INFO L231 Difference]: Finished difference. Result has 271 places, 0 transitions, 0 flow [2023-09-01 09:03:21,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4038, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=271, PETRI_TRANSITIONS=0} [2023-09-01 09:03:21,999 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 253 predicate places. [2023-09-01 09:03:21,999 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 0 transitions, 0 flow [2023-09-01 09:03:21,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 58.23076923076923) internal successors, (757), 13 states have internal predecessors, (757), 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 09:03:22,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-09-01 09:03:22,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 09:03:22,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 09:03:22,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 09:03:22,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 09:03:22,204 INFO L445 BasicCegarLoop]: Path program histogram: [13, 2, 1] [2023-09-01 09:03:22,207 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:03:22,207 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:03:22,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:03:22 BasicIcfg [2023-09-01 09:03:22,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:03:22,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:03:22,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:03:22,210 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:03:22,210 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:02:58" (3/4) ... [2023-09-01 09:03:22,212 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:03:22,217 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-09-01 09:03:22,218 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-09-01 09:03:22,220 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 09:03:22,221 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-09-01 09:03:22,221 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:03:22,221 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:03:22,245 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:03:22,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:03:22,246 INFO L158 Benchmark]: Toolchain (without parser) took 24815.90ms. Allocated memory was 65.0MB in the beginning and 1.0GB in the end (delta: 975.2MB). Free memory was 40.8MB in the beginning and 633.8MB in the end (delta: -593.0MB). Peak memory consumption was 382.6MB. Max. memory is 16.1GB. [2023-09-01 09:03:22,246 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 65.0MB. Free memory was 42.1MB in the beginning and 42.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:03:22,247 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.53ms. Allocated memory was 65.0MB in the beginning and 90.2MB in the end (delta: 25.2MB). Free memory was 40.6MB in the beginning and 61.5MB in the end (delta: -20.9MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2023-09-01 09:03:22,247 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.28ms. Allocated memory is still 90.2MB. Free memory was 61.5MB in the beginning and 59.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:03:22,247 INFO L158 Benchmark]: Boogie Preprocessor took 50.50ms. Allocated memory is still 90.2MB. Free memory was 59.7MB in the beginning and 58.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:03:22,247 INFO L158 Benchmark]: RCFGBuilder took 384.76ms. Allocated memory is still 90.2MB. Free memory was 58.0MB in the beginning and 45.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 09:03:22,248 INFO L158 Benchmark]: TraceAbstraction took 23819.44ms. Allocated memory was 90.2MB in the beginning and 1.0GB in the end (delta: 950.0MB). Free memory was 45.1MB in the beginning and 636.3MB in the end (delta: -591.2MB). Peak memory consumption was 402.0MB. Max. memory is 16.1GB. [2023-09-01 09:03:22,248 INFO L158 Benchmark]: Witness Printer took 36.29ms. Allocated memory is still 1.0GB. Free memory was 636.3MB in the beginning and 633.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:03:22,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 65.0MB. Free memory was 42.1MB in the beginning and 42.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 454.53ms. Allocated memory was 65.0MB in the beginning and 90.2MB in the end (delta: 25.2MB). Free memory was 40.6MB in the beginning and 61.5MB in the end (delta: -20.9MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.28ms. Allocated memory is still 90.2MB. Free memory was 61.5MB in the beginning and 59.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.50ms. Allocated memory is still 90.2MB. Free memory was 59.7MB in the beginning and 58.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 384.76ms. Allocated memory is still 90.2MB. Free memory was 58.0MB in the beginning and 45.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 23819.44ms. Allocated memory was 90.2MB in the beginning and 1.0GB in the end (delta: 950.0MB). Free memory was 45.1MB in the beginning and 636.3MB in the end (delta: -591.2MB). Peak memory consumption was 402.0MB. Max. memory is 16.1GB. * Witness Printer took 36.29ms. Allocated memory is still 1.0GB. Free memory was 636.3MB in the beginning and 633.8MB in the end (delta: 2.5MB). 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: 1.9s, 66 PlacesBefore, 18 PlacesAfterwards, 64 TransitionsBefore, 14 TransitionsAfterwards, 1078 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 856, independent: 829, independent conditional: 0, independent unconditional: 829, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 590, independent: 578, independent conditional: 0, independent unconditional: 578, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 856, independent: 251, independent conditional: 0, independent unconditional: 251, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 590, unknown conditional: 0, unknown unconditional: 590] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: 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, 84 locations, 3 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: 23.6s, OverallIterations: 16, TraceHistogramMax: 11, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3661 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3568 mSDsluCounter, 520 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 506 mSDsCounter, 378 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3766 IncrementalHoareTripleChecker+Invalid, 4144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 378 mSolverCounterUnsat, 14 mSDtfsCounter, 3766 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 697 GetRequests, 218 SyntacticMatches, 35 SemanticMatches, 444 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6135 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5711occurred in iteration=15, InterpolantAutomatonStates: 319, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 2196 SizeOfPredicates, 83 NumberOfNonLiveVariables, 1620 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 190/875 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 09:03:22,272 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