./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.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-wmm/safe002_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 --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 09:54:36,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:54:36,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:54:36,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:54:36,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:54:36,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:54:36,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:54:36,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:54:36,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:54:36,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:54:36,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:54:36,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:54:36,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:54:36,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:54:36,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:54:36,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:54:36,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:54:36,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:54:36,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:54:36,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:54:36,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:54:36,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:54:36,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:54:36,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:54:36,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:54:36,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:54:36,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:54:36,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:54:36,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:54:36,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:54:36,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:54:36,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:54:36,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:54:36,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:54:36,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:54:36,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:54:36,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:54:36,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:54:36,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:54:36,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:54:36,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:54:36,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:54:36,501 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:54:36,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:54:36,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:54:36,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:54:36,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:54:36,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:54:36,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:54:36,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:54:36,505 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:54:36,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:54:36,506 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:54:36,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:54:36,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:54:36,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:54:36,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:54:36,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:54:36,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:54:36,507 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:54:36,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:54:36,508 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:54:36,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:54:36,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:54:36,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:54:36,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:54:36,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:54:36,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:54:36,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:54:36,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:54:36,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:54:36,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:54:36,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:54:36,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:54:36,511 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:54:36,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:54:36,511 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:54:36,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:54:36,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:54:36,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:54:36,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:54:36,863 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:54:36,864 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:54:36,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2023-09-01 09:54:38,058 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:54:38,327 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:54:38,328 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2023-09-01 09:54:38,341 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1cc62eca/5623719fe4724146ae32fb617ec2502d/FLAG706115046 [2023-09-01 09:54:38,362 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1cc62eca/5623719fe4724146ae32fb617ec2502d [2023-09-01 09:54:38,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:54:38,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:54:38,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:54:38,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:54:38,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:54:38,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:38,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38, skipping insertion in model container [2023-09-01 09:54:38,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:38,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:54:38,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:54:38,620 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i[945,958] [2023-09-01 09:54:38,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:54:38,837 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:54:38,853 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i[945,958] [2023-09-01 09:54:38,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:54:38,926 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:54:38,927 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:54:38,933 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:54:38,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38 WrapperNode [2023-09-01 09:54:38,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:54:38,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:54:38,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:54:38,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:54:38,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:38,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:38,996 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-09-01 09:54:38,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:54:38,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:54:38,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:54:38,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:54:39,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:39,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:39,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:39,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:39,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:39,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:39,027 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:39,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:39,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:54:39,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:54:39,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:54:39,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:54:39,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (1/1) ... [2023-09-01 09:54:39,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:54:39,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:54:39,079 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 09:54:39,093 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 09:54:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:54:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:54:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:54:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:54:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:54:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:54:39,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:54:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:54:39,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:54:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-09-01 09:54:39,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-09-01 09:54:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:54:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:54:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:54:39,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:54:39,126 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 09:54:39,283 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:54:39,285 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:54:39,474 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:54:39,479 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:54:39,480 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:54:39,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:54:39 BoogieIcfgContainer [2023-09-01 09:54:39,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:54:39,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:54:39,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:54:39,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:54:39,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:54:38" (1/3) ... [2023-09-01 09:54:39,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a8bd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:54:39, skipping insertion in model container [2023-09-01 09:54:39,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:54:38" (2/3) ... [2023-09-01 09:54:39,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a8bd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:54:39, skipping insertion in model container [2023-09-01 09:54:39,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:54:39" (3/3) ... [2023-09-01 09:54:39,493 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2023-09-01 09:54:39,500 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:54:39,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:54:39,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:54:39,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:54:39,572 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:54:39,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-09-01 09:54:39,658 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-09-01 09:54:39,659 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:54:39,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-09-01 09:54:39,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-09-01 09:54:39,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-09-01 09:54:39,670 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:54:39,678 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-09-01 09:54:39,681 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-09-01 09:54:39,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-09-01 09:54:39,708 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-09-01 09:54:39,710 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:54:39,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-09-01 09:54:39,713 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-09-01 09:54:41,788 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-09-01 09:54:41,788 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-09-01 09:54:41,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:54:41,807 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;@3bab7076, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:54:41,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 09:54:41,812 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-09-01 09:54:41,813 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:54:41,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:54:41,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:41,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:54:41,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:54:41,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1940031658, now seen corresponding path program 1 times [2023-09-01 09:54:41,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:54:41,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777920168] [2023-09-01 09:54:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:54:41,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:54:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:54:42,346 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 09:54:42,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:54:42,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777920168] [2023-09-01 09:54:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777920168] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:54:42,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:54:42,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:54:42,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91402287] [2023-09-01 09:54:42,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:54:42,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:54:42,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:54:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:54:42,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:54:42,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:54:42,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 09:54:42,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:54:42,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:54:42,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:54:42,584 INFO L130 PetriNetUnfolder]: 557/896 cut-off events. [2023-09-01 09:54:42,585 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-09-01 09:54:42,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 896 events. 557/896 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3934 event pairs, 184 based on Foata normal form. 42/938 useless extension candidates. Maximal degree in co-relation 1840. Up to 579 conditions per place. [2023-09-01 09:54:42,595 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-09-01 09:54:42,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-09-01 09:54:42,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:54:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:54:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-09-01 09:54:42,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5721040189125296 [2023-09-01 09:54:42,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-09-01 09:54:42,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-09-01 09:54:42,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:54:42,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-09-01 09:54:42,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 09:54:42,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 09:54:42,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 09:54:42,630 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 242 transitions. [2023-09-01 09:54:42,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-09-01 09:54:42,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 09:54:42,634 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-09-01 09:54:42,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-09-01 09:54:42,640 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-09-01 09:54:42,641 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-09-01 09:54:42,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 09:54:42,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:54:42,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:42,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:54:42,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:54:42,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:54:42,653 INFO L85 PathProgramCache]: Analyzing trace with hash 11438640, now seen corresponding path program 1 times [2023-09-01 09:54:42,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:54:42,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840260367] [2023-09-01 09:54:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:54:42,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:54:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:54:42,869 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 09:54:42,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:54:42,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840260367] [2023-09-01 09:54:42,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840260367] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:54:42,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:54:42,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:54:42,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991583567] [2023-09-01 09:54:42,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:54:42,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:54:42,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:54:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:54:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:54:42,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:54:42,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 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 09:54:42,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:54:42,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:54:42,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:54:42,998 INFO L130 PetriNetUnfolder]: 508/823 cut-off events. [2023-09-01 09:54:42,998 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2023-09-01 09:54:42,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2246 conditions, 823 events. 508/823 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3406 event pairs, 94 based on Foata normal form. 12/835 useless extension candidates. Maximal degree in co-relation 2234. Up to 443 conditions per place. [2023-09-01 09:54:43,003 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 31 selfloop transitions, 10 changer transitions 0/41 dead transitions. [2023-09-01 09:54:43,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 236 flow [2023-09-01 09:54:43,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:54:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:54:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2023-09-01 09:54:43,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2023-09-01 09:54:43,005 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 318 transitions. [2023-09-01 09:54:43,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 318 transitions. [2023-09-01 09:54:43,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:54:43,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 318 transitions. [2023-09-01 09:54:43,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 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 09:54:43,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 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 09:54:43,009 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 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 09:54:43,009 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 318 transitions. [2023-09-01 09:54:43,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 236 flow [2023-09-01 09:54:43,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 41 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:54:43,013 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 148 flow [2023-09-01 09:54:43,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-09-01 09:54:43,014 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-09-01 09:54:43,014 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 148 flow [2023-09-01 09:54:43,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 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 09:54:43,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:54:43,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:43,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:54:43,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:54:43,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:54:43,016 INFO L85 PathProgramCache]: Analyzing trace with hash 354574968, now seen corresponding path program 1 times [2023-09-01 09:54:43,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:54:43,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578091061] [2023-09-01 09:54:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:54:43,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:54:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:54:43,150 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 09:54:43,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:54:43,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578091061] [2023-09-01 09:54:43,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578091061] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:54:43,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:54:43,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:54:43,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606788868] [2023-09-01 09:54:43,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:54:43,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:54:43,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:54:43,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:54:43,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:54:43,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:54:43,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 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 09:54:43,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:54:43,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:54:43,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:54:43,267 INFO L130 PetriNetUnfolder]: 486/789 cut-off events. [2023-09-01 09:54:43,268 INFO L131 PetriNetUnfolder]: For 658/658 co-relation queries the response was YES. [2023-09-01 09:54:43,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 789 events. 486/789 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3272 event pairs, 109 based on Foata normal form. 8/797 useless extension candidates. Maximal degree in co-relation 2382. Up to 477 conditions per place. [2023-09-01 09:54:43,273 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 36 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2023-09-01 09:54:43,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 316 flow [2023-09-01 09:54:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:54:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:54:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2023-09-01 09:54:43,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2023-09-01 09:54:43,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 320 transitions. [2023-09-01 09:54:43,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 320 transitions. [2023-09-01 09:54:43,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:54:43,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 320 transitions. [2023-09-01 09:54:43,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 09:54:43,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 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 09:54:43,279 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 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 09:54:43,279 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 148 flow. Second operand 4 states and 320 transitions. [2023-09-01 09:54:43,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 316 flow [2023-09-01 09:54:43,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:54:43,284 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 228 flow [2023-09-01 09:54:43,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-09-01 09:54:43,286 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-09-01 09:54:43,288 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 228 flow [2023-09-01 09:54:43,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 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 09:54:43,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:54:43,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:43,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:54:43,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:54:43,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:54:43,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1893045014, now seen corresponding path program 1 times [2023-09-01 09:54:43,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:54:43,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959941162] [2023-09-01 09:54:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:54:43,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:54:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:54:43,472 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 09:54:43,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:54:43,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959941162] [2023-09-01 09:54:43,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959941162] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:54:43,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:54:43,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:54:43,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783229353] [2023-09-01 09:54:43,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:54:43,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:54:43,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:54:43,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:54:43,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:54:43,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:54:43,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 0 states have call successors, (0), 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 09:54:43,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:54:43,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:54:43,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:54:43,624 INFO L130 PetriNetUnfolder]: 520/847 cut-off events. [2023-09-01 09:54:43,625 INFO L131 PetriNetUnfolder]: For 1814/1814 co-relation queries the response was YES. [2023-09-01 09:54:43,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2914 conditions, 847 events. 520/847 cut-off events. For 1814/1814 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3559 event pairs, 129 based on Foata normal form. 36/883 useless extension candidates. Maximal degree in co-relation 2894. Up to 476 conditions per place. [2023-09-01 09:54:43,629 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 29 selfloop transitions, 9 changer transitions 14/52 dead transitions. [2023-09-01 09:54:43,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 430 flow [2023-09-01 09:54:43,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:54:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:54:43,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 391 transitions. [2023-09-01 09:54:43,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546099290780142 [2023-09-01 09:54:43,633 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 391 transitions. [2023-09-01 09:54:43,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 391 transitions. [2023-09-01 09:54:43,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:54:43,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 391 transitions. [2023-09-01 09:54:43,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 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 09:54:43,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 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 09:54:43,636 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 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 09:54:43,637 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 228 flow. Second operand 5 states and 391 transitions. [2023-09-01 09:54:43,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 430 flow [2023-09-01 09:54:43,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:54:43,644 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 209 flow [2023-09-01 09:54:43,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2023-09-01 09:54:43,645 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-09-01 09:54:43,645 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 209 flow [2023-09-01 09:54:43,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 0 states have call successors, (0), 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 09:54:43,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:54:43,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:43,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:54:43,646 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:54:43,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:54:43,647 INFO L85 PathProgramCache]: Analyzing trace with hash 988738683, now seen corresponding path program 1 times [2023-09-01 09:54:43,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:54:43,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833572223] [2023-09-01 09:54:43,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:54:43,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:54:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:54:43,780 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 09:54:43,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:54:43,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833572223] [2023-09-01 09:54:43,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833572223] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:54:43,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:54:43,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:54:43,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313915798] [2023-09-01 09:54:43,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:54:43,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:54:43,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:54:43,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:54:43,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:54:43,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:54:43,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 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 09:54:43,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:54:43,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:54:43,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:54:43,883 INFO L130 PetriNetUnfolder]: 245/414 cut-off events. [2023-09-01 09:54:43,883 INFO L131 PetriNetUnfolder]: For 1083/1083 co-relation queries the response was YES. [2023-09-01 09:54:43,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 414 events. 245/414 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1459 event pairs, 59 based on Foata normal form. 6/420 useless extension candidates. Maximal degree in co-relation 1526. Up to 202 conditions per place. [2023-09-01 09:54:43,887 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-09-01 09:54:43,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 317 flow [2023-09-01 09:54:43,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:54:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:54:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-09-01 09:54:43,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5549645390070922 [2023-09-01 09:54:43,888 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-09-01 09:54:43,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-09-01 09:54:43,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:54:43,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-09-01 09:54:43,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:54:43,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 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 09:54:43,891 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 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 09:54:43,892 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 209 flow. Second operand 4 states and 313 transitions. [2023-09-01 09:54:43,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 317 flow [2023-09-01 09:54:43,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 286 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 09:54:43,897 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 199 flow [2023-09-01 09:54:43,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2023-09-01 09:54:43,899 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-09-01 09:54:43,900 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 199 flow [2023-09-01 09:54:43,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 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 09:54:43,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:54:43,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:43,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:54:43,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:54:43,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:54:43,902 INFO L85 PathProgramCache]: Analyzing trace with hash 624297291, now seen corresponding path program 1 times [2023-09-01 09:54:43,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:54:43,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733776016] [2023-09-01 09:54:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:54:43,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:54:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:54:44,076 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 09:54:44,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:54:44,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733776016] [2023-09-01 09:54:44,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733776016] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:54:44,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:54:44,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:54:44,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297535095] [2023-09-01 09:54:44,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:54:44,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:54:44,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:54:44,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:54:44,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:54:44,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:54:44,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 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 09:54:44,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:54:44,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:54:44,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:54:44,191 INFO L130 PetriNetUnfolder]: 325/554 cut-off events. [2023-09-01 09:54:44,192 INFO L131 PetriNetUnfolder]: For 1226/1226 co-relation queries the response was YES. [2023-09-01 09:54:44,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 554 events. 325/554 cut-off events. For 1226/1226 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2100 event pairs, 105 based on Foata normal form. 12/566 useless extension candidates. Maximal degree in co-relation 2028. Up to 248 conditions per place. [2023-09-01 09:54:44,195 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 26 selfloop transitions, 8 changer transitions 11/45 dead transitions. [2023-09-01 09:54:44,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 375 flow [2023-09-01 09:54:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:54:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:54:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2023-09-01 09:54:44,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550354609929078 [2023-09-01 09:54:44,198 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2023-09-01 09:54:44,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2023-09-01 09:54:44,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:54:44,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2023-09-01 09:54:44,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:54:44,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 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 09:54:44,201 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 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 09:54:44,201 INFO L175 Difference]: Start difference. First operand has 42 places, 26 transitions, 199 flow. Second operand 5 states and 388 transitions. [2023-09-01 09:54:44,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 375 flow [2023-09-01 09:54:44,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 345 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 09:54:44,206 INFO L231 Difference]: Finished difference. Result has 44 places, 23 transitions, 166 flow [2023-09-01 09:54:44,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2023-09-01 09:54:44,209 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-09-01 09:54:44,209 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 166 flow [2023-09-01 09:54:44,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 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 09:54:44,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:54:44,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:44,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:54:44,210 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:54:44,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:54:44,210 INFO L85 PathProgramCache]: Analyzing trace with hash 586760631, now seen corresponding path program 2 times [2023-09-01 09:54:44,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:54:44,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500907040] [2023-09-01 09:54:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:54:44,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:54:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:54:44,372 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 09:54:44,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:54:44,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500907040] [2023-09-01 09:54:44,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500907040] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:54:44,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:54:44,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:54:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744148740] [2023-09-01 09:54:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:54:44,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:54:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:54:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:54:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:54:44,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:54:44,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 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 09:54:44,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:54:44,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:54:44,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:54:44,473 INFO L130 PetriNetUnfolder]: 191/330 cut-off events. [2023-09-01 09:54:44,473 INFO L131 PetriNetUnfolder]: For 616/616 co-relation queries the response was YES. [2023-09-01 09:54:44,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 330 events. 191/330 cut-off events. For 616/616 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1119 event pairs, 35 based on Foata normal form. 12/342 useless extension candidates. Maximal degree in co-relation 1158. Up to 110 conditions per place. [2023-09-01 09:54:44,475 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 19 selfloop transitions, 3 changer transitions 17/39 dead transitions. [2023-09-01 09:54:44,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 284 flow [2023-09-01 09:54:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:54:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:54:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 457 transitions. [2023-09-01 09:54:44,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5401891252955082 [2023-09-01 09:54:44,477 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 457 transitions. [2023-09-01 09:54:44,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 457 transitions. [2023-09-01 09:54:44,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:54:44,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 457 transitions. [2023-09-01 09:54:44,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 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 09:54:44,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 09:54:44,481 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 09:54:44,481 INFO L175 Difference]: Start difference. First operand has 44 places, 23 transitions, 166 flow. Second operand 6 states and 457 transitions. [2023-09-01 09:54:44,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 284 flow [2023-09-01 09:54:44,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 245 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-09-01 09:54:44,484 INFO L231 Difference]: Finished difference. Result has 41 places, 17 transitions, 80 flow [2023-09-01 09:54:44,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=80, PETRI_PLACES=41, PETRI_TRANSITIONS=17} [2023-09-01 09:54:44,485 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-09-01 09:54:44,485 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 17 transitions, 80 flow [2023-09-01 09:54:44,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 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 09:54:44,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:54:44,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:44,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:54:44,487 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:54:44,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:54:44,487 INFO L85 PathProgramCache]: Analyzing trace with hash 586092891, now seen corresponding path program 3 times [2023-09-01 09:54:44,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:54:44,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285802004] [2023-09-01 09:54:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:54:44,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:54:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:54:44,642 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 09:54:44,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:54:44,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285802004] [2023-09-01 09:54:44,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285802004] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:54:44,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:54:44,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:54:44,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062210094] [2023-09-01 09:54:44,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:54:44,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:54:44,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:54:44,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:54:44,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:54:44,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:54:44,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 17 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 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 09:54:44,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:54:44,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:54:44,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:54:44,709 INFO L130 PetriNetUnfolder]: 56/126 cut-off events. [2023-09-01 09:54:44,710 INFO L131 PetriNetUnfolder]: For 230/232 co-relation queries the response was YES. [2023-09-01 09:54:44,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 126 events. 56/126 cut-off events. For 230/232 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 394 event pairs, 23 based on Foata normal form. 10/135 useless extension candidates. Maximal degree in co-relation 349. Up to 73 conditions per place. [2023-09-01 09:54:44,711 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 17 selfloop transitions, 4 changer transitions 12/36 dead transitions. [2023-09-01 09:54:44,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 213 flow [2023-09-01 09:54:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:54:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:54:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 405 transitions. [2023-09-01 09:54:44,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2023-09-01 09:54:44,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 405 transitions. [2023-09-01 09:54:44,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 405 transitions. [2023-09-01 09:54:44,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:54:44,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 405 transitions. [2023-09-01 09:54:44,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:54:44,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 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 09:54:44,716 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 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 09:54:44,716 INFO L175 Difference]: Start difference. First operand has 41 places, 17 transitions, 80 flow. Second operand 5 states and 405 transitions. [2023-09-01 09:54:44,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 213 flow [2023-09-01 09:54:44,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 172 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-09-01 09:54:44,717 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 90 flow [2023-09-01 09:54:44,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2023-09-01 09:54:44,719 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-09-01 09:54:44,719 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 90 flow [2023-09-01 09:54:44,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 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 09:54:44,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:54:44,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:44,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:54:44,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:54:44,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:54:44,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1651512979, now seen corresponding path program 1 times [2023-09-01 09:54:44,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:54:44,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374874169] [2023-09-01 09:54:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:54:44,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:54:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:54:44,865 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 09:54:44,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:54:44,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374874169] [2023-09-01 09:54:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374874169] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:54:44,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:54:44,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:54:44,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616679243] [2023-09-01 09:54:44,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:54:44,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:54:44,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:54:44,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:54:44,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:54:44,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:54:44,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 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 09:54:44,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:54:44,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:54:44,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:54:44,937 INFO L130 PetriNetUnfolder]: 32/81 cut-off events. [2023-09-01 09:54:44,937 INFO L131 PetriNetUnfolder]: For 141/150 co-relation queries the response was YES. [2023-09-01 09:54:44,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 81 events. 32/81 cut-off events. For 141/150 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 210 event pairs, 5 based on Foata normal form. 11/89 useless extension candidates. Maximal degree in co-relation 287. Up to 48 conditions per place. [2023-09-01 09:54:44,938 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 18 selfloop transitions, 7 changer transitions 10/38 dead transitions. [2023-09-01 09:54:44,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 250 flow [2023-09-01 09:54:44,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:54:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:54:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 481 transitions. [2023-09-01 09:54:44,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5685579196217494 [2023-09-01 09:54:44,940 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 481 transitions. [2023-09-01 09:54:44,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 481 transitions. [2023-09-01 09:54:44,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:54:44,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 481 transitions. [2023-09-01 09:54:44,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.16666666666667) internal successors, (481), 6 states have internal predecessors, (481), 0 states have call successors, (0), 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 09:54:44,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 09:54:44,944 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 09:54:44,944 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 90 flow. Second operand 6 states and 481 transitions. [2023-09-01 09:54:44,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 250 flow [2023-09-01 09:54:44,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 09:54:44,946 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 140 flow [2023-09-01 09:54:44,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2023-09-01 09:54:44,946 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-09-01 09:54:44,947 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 140 flow [2023-09-01 09:54:44,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 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 09:54:44,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:54:44,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:44,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:54:44,948 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:54:44,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:54:44,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1103235489, now seen corresponding path program 1 times [2023-09-01 09:54:44,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:54:44,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805639738] [2023-09-01 09:54:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:54:44,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:54:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:54:45,072 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 09:54:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:54:45,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805639738] [2023-09-01 09:54:45,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805639738] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:54:45,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:54:45,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:54:45,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547162514] [2023-09-01 09:54:45,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:54:45,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:54:45,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:54:45,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:54:45,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:54:45,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:54:45,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 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 09:54:45,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:54:45,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:54:45,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:54:45,134 INFO L130 PetriNetUnfolder]: 17/54 cut-off events. [2023-09-01 09:54:45,134 INFO L131 PetriNetUnfolder]: For 170/181 co-relation queries the response was YES. [2023-09-01 09:54:45,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 54 events. 17/54 cut-off events. For 170/181 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 2 based on Foata normal form. 10/63 useless extension candidates. Maximal degree in co-relation 211. Up to 28 conditions per place. [2023-09-01 09:54:45,135 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 15 selfloop transitions, 10 changer transitions 5/33 dead transitions. [2023-09-01 09:54:45,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 260 flow [2023-09-01 09:54:45,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:54:45,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:54:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2023-09-01 09:54:45,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572441742654508 [2023-09-01 09:54:45,137 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 550 transitions. [2023-09-01 09:54:45,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 550 transitions. [2023-09-01 09:54:45,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:54:45,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 550 transitions. [2023-09-01 09:54:45,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 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 09:54:45,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 09:54:45,140 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 09:54:45,140 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 140 flow. Second operand 7 states and 550 transitions. [2023-09-01 09:54:45,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 260 flow [2023-09-01 09:54:45,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 222 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-09-01 09:54:45,142 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 140 flow [2023-09-01 09:54:45,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2023-09-01 09:54:45,143 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-09-01 09:54:45,143 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 140 flow [2023-09-01 09:54:45,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 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 09:54:45,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:54:45,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:45,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 09:54:45,144 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:54:45,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:54:45,144 INFO L85 PathProgramCache]: Analyzing trace with hash -416650666, now seen corresponding path program 1 times [2023-09-01 09:54:45,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:54:45,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475914494] [2023-09-01 09:54:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:54:45,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:54:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:54:45,252 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 09:54:45,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:54:45,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475914494] [2023-09-01 09:54:45,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475914494] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:54:45,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:54:45,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:54:45,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632352113] [2023-09-01 09:54:45,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:54:45,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:54:45,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:54:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:54:45,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:54:45,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 141 [2023-09-01 09:54:45,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 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 09:54:45,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:54:45,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 141 [2023-09-01 09:54:45,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:54:45,292 INFO L130 PetriNetUnfolder]: 18/52 cut-off events. [2023-09-01 09:54:45,292 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-09-01 09:54:45,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 52 events. 18/52 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 4 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 194. Up to 24 conditions per place. [2023-09-01 09:54:45,293 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-09-01 09:54:45,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 28 transitions, 216 flow [2023-09-01 09:54:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:54:45,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:54:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-09-01 09:54:45,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5656028368794326 [2023-09-01 09:54:45,295 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-09-01 09:54:45,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-09-01 09:54:45,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:54:45,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-09-01 09:54:45,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:54:45,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 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 09:54:45,297 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 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 09:54:45,297 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 140 flow. Second operand 4 states and 319 transitions. [2023-09-01 09:54:45,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 28 transitions, 216 flow [2023-09-01 09:54:45,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 176 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-09-01 09:54:45,299 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-09-01 09:54:45,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-09-01 09:54:45,299 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-09-01 09:54:45,300 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-09-01 09:54:45,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 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 09:54:45,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 09:54:45,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 09:54:45,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 09:54:45,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 09:54:45,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 09:54:45,303 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:54:45,306 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:54:45,306 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:54:45,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:54:45 BasicIcfg [2023-09-01 09:54:45,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:54:45,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:54:45,310 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:54:45,310 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:54:45,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:54:39" (3/4) ... [2023-09-01 09:54:45,312 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:54:45,318 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:54:45,318 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:54:45,318 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-09-01 09:54:45,322 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 09:54:45,322 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 09:54:45,322 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:54:45,322 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:54:45,347 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:54:45,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:54:45,348 INFO L158 Benchmark]: Toolchain (without parser) took 6983.86ms. Allocated memory was 67.1MB in the beginning and 144.7MB in the end (delta: 77.6MB). Free memory was 42.8MB in the beginning and 87.0MB in the end (delta: -44.2MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2023-09-01 09:54:45,348 INFO L158 Benchmark]: CDTParser took 1.04ms. Allocated memory is still 54.5MB. Free memory was 31.9MB in the beginning and 31.9MB in the end (delta: 36.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:54:45,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 567.03ms. Allocated memory is still 67.1MB. Free memory was 42.6MB in the beginning and 37.8MB in the end (delta: 4.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 09:54:45,349 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.17ms. Allocated memory is still 67.1MB. Free memory was 37.6MB in the beginning and 35.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:54:45,349 INFO L158 Benchmark]: Boogie Preprocessor took 33.03ms. Allocated memory is still 67.1MB. Free memory was 35.7MB in the beginning and 34.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:54:45,349 INFO L158 Benchmark]: RCFGBuilder took 454.09ms. Allocated memory is still 67.1MB. Free memory was 34.0MB in the beginning and 38.1MB in the end (delta: -4.1MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2023-09-01 09:54:45,350 INFO L158 Benchmark]: TraceAbstraction took 5822.52ms. Allocated memory was 67.1MB in the beginning and 144.7MB in the end (delta: 77.6MB). Free memory was 37.2MB in the beginning and 89.1MB in the end (delta: -51.9MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-09-01 09:54:45,350 INFO L158 Benchmark]: Witness Printer took 38.27ms. Allocated memory is still 144.7MB. Free memory was 89.1MB in the beginning and 87.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:54:45,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.04ms. Allocated memory is still 54.5MB. Free memory was 31.9MB in the beginning and 31.9MB in the end (delta: 36.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 567.03ms. Allocated memory is still 67.1MB. Free memory was 42.6MB in the beginning and 37.8MB in the end (delta: 4.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.17ms. Allocated memory is still 67.1MB. Free memory was 37.6MB in the beginning and 35.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.03ms. Allocated memory is still 67.1MB. Free memory was 35.7MB in the beginning and 34.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 454.09ms. Allocated memory is still 67.1MB. Free memory was 34.0MB in the beginning and 38.1MB in the end (delta: -4.1MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5822.52ms. Allocated memory was 67.1MB in the beginning and 144.7MB in the end (delta: 77.6MB). Free memory was 37.2MB in the beginning and 89.1MB in the end (delta: -51.9MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * Witness Printer took 38.27ms. Allocated memory is still 144.7MB. Free memory was 89.1MB in the beginning and 87.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1177, independent: 1100, independent conditional: 0, independent unconditional: 1100, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 572, independent: 549, independent conditional: 0, independent unconditional: 549, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1177, independent: 551, independent conditional: 0, independent unconditional: 551, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 572, unknown conditional: 0, unknown unconditional: 572] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.7s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 333 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 630 IncrementalHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 42 mSDtfsCounter, 630 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=228occurred in iteration=3, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 09:54:45,369 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