./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe012_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/safe012_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 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd --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 09:56:03,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:56:03,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:56:03,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:56:03,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:56:03,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:56:03,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:56:03,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:56:03,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:56:03,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:56:03,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:56:03,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:56:03,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:56:03,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:56:03,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:56:03,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:56:03,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:56:03,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:56:03,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:56:03,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:56:03,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:56:03,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:56:03,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:56:03,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:56:03,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:56:03,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:56:03,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:56:03,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:56:03,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:56:03,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:56:03,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:56:03,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:56:03,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:56:03,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:56:03,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:56:03,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:56:03,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:56:03,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:56:03,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:56:03,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:56:03,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:56:03,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:56:03,640 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:56:03,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:56:03,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:56:03,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:56:03,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:56:03,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:56:03,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:56:03,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:56:03,645 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:56:03,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:56:03,646 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:56:03,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:56:03,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:56:03,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:56:03,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:56:03,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:56:03,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:56:03,647 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:56:03,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:56:03,647 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:56:03,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:56:03,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:56:03,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:56:03,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:56:03,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:56:03,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:56:03,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:56:03,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:56:03,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:56:03,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:56:03,650 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:56:03,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:56:03,650 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:56:03,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:56:03,651 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:56:03,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:56:03,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:56:03,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:56:03,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:56:03,987 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:56:03,988 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:56:03,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2023-09-01 09:56:05,111 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:56:05,378 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:56:05,378 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2023-09-01 09:56:05,390 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b047b2242/3cc16bbe2c5244fc8c66bf1dc2fe2a46/FLAG23b1127eb [2023-09-01 09:56:05,408 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b047b2242/3cc16bbe2c5244fc8c66bf1dc2fe2a46 [2023-09-01 09:56:05,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:56:05,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:56:05,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:56:05,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:56:05,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:56:05,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1eac28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05, skipping insertion in model container [2023-09-01 09:56:05,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:56:05,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:56:05,591 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/safe012_tso.i[945,958] [2023-09-01 09:56:05,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:56:05,732 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:56:05,742 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/safe012_tso.i[945,958] [2023-09-01 09:56:05,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:56:05,861 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:56:05,862 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:56:05,868 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:56:05,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05 WrapperNode [2023-09-01 09:56:05,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:56:05,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:56:05,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:56:05,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:56:05,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,932 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-09-01 09:56:05,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:56:05,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:56:05,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:56:05,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:56:05,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,978 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:56:05,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:56:05,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:56:05,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:56:05,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (1/1) ... [2023-09-01 09:56:05,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:56:06,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:56:06,022 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 09:56:06,049 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 09:56:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:56:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:56:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:56:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:56:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:56:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:56:06,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:56:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:56:06,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:56:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-09-01 09:56:06,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-09-01 09:56:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:56:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:56:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:56:06,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:56:06,068 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 09:56:06,262 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:56:06,264 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:56:06,448 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:56:06,454 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:56:06,454 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:56:06,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:56:06 BoogieIcfgContainer [2023-09-01 09:56:06,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:56:06,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:56:06,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:56:06,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:56:06,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:56:05" (1/3) ... [2023-09-01 09:56:06,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e5adf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:56:06, skipping insertion in model container [2023-09-01 09:56:06,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:05" (2/3) ... [2023-09-01 09:56:06,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e5adf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:56:06, skipping insertion in model container [2023-09-01 09:56:06,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:56:06" (3/3) ... [2023-09-01 09:56:06,464 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2023-09-01 09:56:06,470 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:56:06,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:56:06,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:56:06,482 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:56:06,537 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:56:06,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2023-09-01 09:56:06,617 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2023-09-01 09:56:06,617 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:56:06,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-09-01 09:56:06,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2023-09-01 09:56:06,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2023-09-01 09:56:06,627 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:56:06,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2023-09-01 09:56:06,638 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2023-09-01 09:56:06,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2023-09-01 09:56:06,657 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2023-09-01 09:56:06,657 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:56:06,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-09-01 09:56:06,659 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-09-01 09:56:08,651 INFO L134 LiptonReduction]: Checked pairs total: 1982 [2023-09-01 09:56:08,651 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-09-01 09:56:08,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:56:08,668 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;@1bb0081b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:56:08,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 09:56:08,672 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-09-01 09:56:08,672 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:56:08,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:08,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:08,674 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 09:56:08,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:08,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1603823166, now seen corresponding path program 1 times [2023-09-01 09:56:08,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:08,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377298307] [2023-09-01 09:56:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:08,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:09,197 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 09:56:09,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:09,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377298307] [2023-09-01 09:56:09,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377298307] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:09,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:09,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:56:09,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851673617] [2023-09-01 09:56:09,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:09,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:56:09,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:09,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:56:09,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:56:09,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 145 [2023-09-01 09:56:09,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:09,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:09,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 145 [2023-09-01 09:56:09,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:09,366 INFO L130 PetriNetUnfolder]: 222/386 cut-off events. [2023-09-01 09:56:09,370 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-09-01 09:56:09,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 386 events. 222/386 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1636 event pairs, 69 based on Foata normal form. 3/388 useless extension candidates. Maximal degree in co-relation 774. Up to 340 conditions per place. [2023-09-01 09:56:09,376 INFO L137 encePairwiseOnDemand]: 140/145 looper letters, 21 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-09-01 09:56:09,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 115 flow [2023-09-01 09:56:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:56:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:56:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-09-01 09:56:09,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5724137931034483 [2023-09-01 09:56:09,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-09-01 09:56:09,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-09-01 09:56:09,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:09,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-09-01 09:56:09,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:09,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 09:56:09,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 09:56:09,408 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 249 transitions. [2023-09-01 09:56:09,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 115 flow [2023-09-01 09:56:09,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 09:56:09,421 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-09-01 09:56:09,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-09-01 09:56:09,428 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-09-01 09:56:09,428 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-09-01 09:56:09,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:09,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:09,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:09,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:56:09,434 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 09:56:09,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1821090019, now seen corresponding path program 1 times [2023-09-01 09:56:09,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:09,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755916129] [2023-09-01 09:56:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:09,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:09,603 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 09:56:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755916129] [2023-09-01 09:56:09,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755916129] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:09,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:09,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:56:09,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197557558] [2023-09-01 09:56:09,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:09,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:56:09,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:09,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:56:09,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:56:09,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 145 [2023-09-01 09:56:09,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 09:56:09,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:09,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 145 [2023-09-01 09:56:09,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:09,660 INFO L130 PetriNetUnfolder]: 143/265 cut-off events. [2023-09-01 09:56:09,660 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-09-01 09:56:09,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 265 events. 143/265 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1080 event pairs, 53 based on Foata normal form. 6/267 useless extension candidates. Maximal degree in co-relation 613. Up to 154 conditions per place. [2023-09-01 09:56:09,663 INFO L137 encePairwiseOnDemand]: 142/145 looper letters, 17 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-09-01 09:56:09,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 23 transitions, 107 flow [2023-09-01 09:56:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:56:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:56:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-09-01 09:56:09,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5839080459770115 [2023-09-01 09:56:09,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-09-01 09:56:09,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-09-01 09:56:09,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:09,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-09-01 09:56:09,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 09:56:09,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 09:56:09,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 09:56:09,669 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 254 transitions. [2023-09-01 09:56:09,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 23 transitions, 107 flow [2023-09-01 09:56:09,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:56:09,673 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 67 flow [2023-09-01 09:56:09,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-09-01 09:56:09,674 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-09-01 09:56:09,674 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 67 flow [2023-09-01 09:56:09,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 09:56:09,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:09,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:09,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:56:09,675 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 09:56:09,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:09,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1821089988, now seen corresponding path program 1 times [2023-09-01 09:56:09,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:09,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062587107] [2023-09-01 09:56:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:56:09,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:09,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062587107] [2023-09-01 09:56:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062587107] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:09,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:09,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:56:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498748945] [2023-09-01 09:56:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:09,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:09,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:09,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:09,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:09,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 145 [2023-09-01 09:56:09,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 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 09:56:09,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:09,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 145 [2023-09-01 09:56:09,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:09,929 INFO L130 PetriNetUnfolder]: 188/334 cut-off events. [2023-09-01 09:56:09,929 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-09-01 09:56:09,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 334 events. 188/334 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1363 event pairs, 91 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 807. Up to 265 conditions per place. [2023-09-01 09:56:09,931 INFO L137 encePairwiseOnDemand]: 142/145 looper letters, 22 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-09-01 09:56:09,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 137 flow [2023-09-01 09:56:09,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:56:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:56:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-09-01 09:56:09,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5678160919540229 [2023-09-01 09:56:09,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-09-01 09:56:09,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-09-01 09:56:09,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:09,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-09-01 09:56:09,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 09:56:09,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 09:56:09,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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 09:56:09,936 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 67 flow. Second operand 3 states and 247 transitions. [2023-09-01 09:56:09,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 137 flow [2023-09-01 09:56:09,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:56:09,939 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 72 flow [2023-09-01 09:56:09,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2023-09-01 09:56:09,940 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-09-01 09:56:09,940 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 72 flow [2023-09-01 09:56:09,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 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 09:56:09,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:09,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:09,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:56:09,941 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 09:56:09,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:09,941 INFO L85 PathProgramCache]: Analyzing trace with hash -619216323, now seen corresponding path program 1 times [2023-09-01 09:56:09,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:09,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777055953] [2023-09-01 09:56:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:09,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:10,106 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 09:56:10,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:10,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777055953] [2023-09-01 09:56:10,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777055953] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:10,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:10,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:56:10,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942797642] [2023-09-01 09:56:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:10,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:10,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:10,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 145 [2023-09-01 09:56:10,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:10,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:10,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 145 [2023-09-01 09:56:10,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:10,248 INFO L130 PetriNetUnfolder]: 341/582 cut-off events. [2023-09-01 09:56:10,249 INFO L131 PetriNetUnfolder]: For 340/340 co-relation queries the response was YES. [2023-09-01 09:56:10,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 582 events. 341/582 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2618 event pairs, 63 based on Foata normal form. 24/598 useless extension candidates. Maximal degree in co-relation 1438. Up to 221 conditions per place. [2023-09-01 09:56:10,254 INFO L137 encePairwiseOnDemand]: 139/145 looper letters, 34 selfloop transitions, 11 changer transitions 2/48 dead transitions. [2023-09-01 09:56:10,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 259 flow [2023-09-01 09:56:10,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:56:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:56:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 407 transitions. [2023-09-01 09:56:10,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5613793103448276 [2023-09-01 09:56:10,256 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 407 transitions. [2023-09-01 09:56:10,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 407 transitions. [2023-09-01 09:56:10,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:10,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 407 transitions. [2023-09-01 09:56:10,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:10,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 09:56:10,261 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 09:56:10,262 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 72 flow. Second operand 5 states and 407 transitions. [2023-09-01 09:56:10,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 259 flow [2023-09-01 09:56:10,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 48 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:56:10,266 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 149 flow [2023-09-01 09:56:10,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-09-01 09:56:10,268 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-09-01 09:56:10,268 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 149 flow [2023-09-01 09:56:10,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:10,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:10,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:10,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:56:10,269 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 09:56:10,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:10,270 INFO L85 PathProgramCache]: Analyzing trace with hash -619561353, now seen corresponding path program 2 times [2023-09-01 09:56:10,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:10,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542114570] [2023-09-01 09:56:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:10,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:10,475 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 09:56:10,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:10,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542114570] [2023-09-01 09:56:10,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542114570] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:10,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:10,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:56:10,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91669453] [2023-09-01 09:56:10,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:10,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:56:10,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:10,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:56:10,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:56:10,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 145 [2023-09-01 09:56:10,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 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 09:56:10,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:10,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 145 [2023-09-01 09:56:10,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:10,594 INFO L130 PetriNetUnfolder]: 343/602 cut-off events. [2023-09-01 09:56:10,594 INFO L131 PetriNetUnfolder]: For 730/730 co-relation queries the response was YES. [2023-09-01 09:56:10,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1771 conditions, 602 events. 343/602 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2772 event pairs, 129 based on Foata normal form. 24/622 useless extension candidates. Maximal degree in co-relation 1754. Up to 232 conditions per place. [2023-09-01 09:56:10,597 INFO L137 encePairwiseOnDemand]: 141/145 looper letters, 24 selfloop transitions, 5 changer transitions 8/38 dead transitions. [2023-09-01 09:56:10,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 255 flow [2023-09-01 09:56:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:56:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:56:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2023-09-01 09:56:10,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2023-09-01 09:56:10,599 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 320 transitions. [2023-09-01 09:56:10,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 320 transitions. [2023-09-01 09:56:10,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:10,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 320 transitions. [2023-09-01 09:56:10,600 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 09:56:10,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 09:56:10,602 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 09:56:10,602 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 149 flow. Second operand 4 states and 320 transitions. [2023-09-01 09:56:10,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 255 flow [2023-09-01 09:56:10,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 253 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-09-01 09:56:10,605 INFO L231 Difference]: Finished difference. Result has 40 places, 21 transitions, 126 flow [2023-09-01 09:56:10,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=21} [2023-09-01 09:56:10,606 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-09-01 09:56:10,606 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 21 transitions, 126 flow [2023-09-01 09:56:10,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 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 09:56:10,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:10,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:10,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:56:10,607 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 09:56:10,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:10,608 INFO L85 PathProgramCache]: Analyzing trace with hash -689474346, now seen corresponding path program 1 times [2023-09-01 09:56:10,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:10,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266794894] [2023-09-01 09:56:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:10,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:10,748 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 09:56:10,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:10,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266794894] [2023-09-01 09:56:10,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266794894] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:10,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:10,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:56:10,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206985172] [2023-09-01 09:56:10,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:10,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:56:10,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:10,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:56:10,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:56:10,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 145 [2023-09-01 09:56:10,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 21 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 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 09:56:10,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:10,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 145 [2023-09-01 09:56:10,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:10,848 INFO L130 PetriNetUnfolder]: 212/367 cut-off events. [2023-09-01 09:56:10,848 INFO L131 PetriNetUnfolder]: For 948/952 co-relation queries the response was YES. [2023-09-01 09:56:10,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 367 events. 212/367 cut-off events. For 948/952 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1255 event pairs, 94 based on Foata normal form. 18/380 useless extension candidates. Maximal degree in co-relation 1172. Up to 187 conditions per place. [2023-09-01 09:56:10,850 INFO L137 encePairwiseOnDemand]: 141/145 looper letters, 18 selfloop transitions, 3 changer transitions 9/31 dead transitions. [2023-09-01 09:56:10,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 31 transitions, 217 flow [2023-09-01 09:56:10,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:56:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:56:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-09-01 09:56:10,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2023-09-01 09:56:10,852 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-09-01 09:56:10,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-09-01 09:56:10,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:10,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-09-01 09:56:10,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 09:56:10,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 09:56:10,855 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 09:56:10,855 INFO L175 Difference]: Start difference. First operand has 40 places, 21 transitions, 126 flow. Second operand 4 states and 316 transitions. [2023-09-01 09:56:10,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 31 transitions, 217 flow [2023-09-01 09:56:10,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 192 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-09-01 09:56:10,857 INFO L231 Difference]: Finished difference. Result has 39 places, 17 transitions, 90 flow [2023-09-01 09:56:10,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=17} [2023-09-01 09:56:10,858 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-09-01 09:56:10,858 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 17 transitions, 90 flow [2023-09-01 09:56:10,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 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 09:56:10,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:10,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:10,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:56:10,859 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 09:56:10,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1265018634, now seen corresponding path program 1 times [2023-09-01 09:56:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:10,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797656864] [2023-09-01 09:56:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:10,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:10,986 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 09:56:10,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:10,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797656864] [2023-09-01 09:56:10,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797656864] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:10,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:10,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:56:10,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892175675] [2023-09-01 09:56:10,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:10,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:10,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:10,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:10,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:10,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 145 [2023-09-01 09:56:10,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 17 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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 09:56:10,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:10,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 145 [2023-09-01 09:56:10,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:11,046 INFO L130 PetriNetUnfolder]: 56/126 cut-off events. [2023-09-01 09:56:11,047 INFO L131 PetriNetUnfolder]: For 633/641 co-relation queries the response was YES. [2023-09-01 09:56:11,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 126 events. 56/126 cut-off events. For 633/641 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 399 event pairs, 23 based on Foata normal form. 10/135 useless extension candidates. Maximal degree in co-relation 416. Up to 73 conditions per place. [2023-09-01 09:56:11,048 INFO L137 encePairwiseOnDemand]: 139/145 looper letters, 17 selfloop transitions, 4 changer transitions 12/36 dead transitions. [2023-09-01 09:56:11,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 238 flow [2023-09-01 09:56:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:56:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:56:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 410 transitions. [2023-09-01 09:56:11,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655172413793104 [2023-09-01 09:56:11,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 410 transitions. [2023-09-01 09:56:11,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 410 transitions. [2023-09-01 09:56:11,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:11,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 410 transitions. [2023-09-01 09:56:11,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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 09:56:11,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 09:56:11,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 09:56:11,053 INFO L175 Difference]: Start difference. First operand has 39 places, 17 transitions, 90 flow. Second operand 5 states and 410 transitions. [2023-09-01 09:56:11,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 238 flow [2023-09-01 09:56:11,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 173 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-09-01 09:56:11,055 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 94 flow [2023-09-01 09:56:11,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=94, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-09-01 09:56:11,056 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-09-01 09:56:11,056 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 94 flow [2023-09-01 09:56:11,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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 09:56:11,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:11,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:11,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:56:11,057 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 09:56:11,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:11,058 INFO L85 PathProgramCache]: Analyzing trace with hash 829629094, now seen corresponding path program 1 times [2023-09-01 09:56:11,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:11,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404482275] [2023-09-01 09:56:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:11,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:11,190 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 09:56:11,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:11,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404482275] [2023-09-01 09:56:11,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404482275] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:11,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:11,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:56:11,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463935175] [2023-09-01 09:56:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:11,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:56:11,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:11,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:56:11,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:56:11,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 145 [2023-09-01 09:56:11,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:11,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:11,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 145 [2023-09-01 09:56:11,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:11,252 INFO L130 PetriNetUnfolder]: 32/83 cut-off events. [2023-09-01 09:56:11,252 INFO L131 PetriNetUnfolder]: For 226/250 co-relation queries the response was YES. [2023-09-01 09:56:11,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 83 events. 32/83 cut-off events. For 226/250 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 217 event pairs, 5 based on Foata normal form. 14/95 useless extension candidates. Maximal degree in co-relation 295. Up to 48 conditions per place. [2023-09-01 09:56:11,253 INFO L137 encePairwiseOnDemand]: 139/145 looper letters, 18 selfloop transitions, 7 changer transitions 10/38 dead transitions. [2023-09-01 09:56:11,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 248 flow [2023-09-01 09:56:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:56:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:56:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 487 transitions. [2023-09-01 09:56:11,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597701149425287 [2023-09-01 09:56:11,255 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 487 transitions. [2023-09-01 09:56:11,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 487 transitions. [2023-09-01 09:56:11,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:11,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 487 transitions. [2023-09-01 09:56:11,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 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 09:56:11,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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 09:56:11,259 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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 09:56:11,259 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 94 flow. Second operand 6 states and 487 transitions. [2023-09-01 09:56:11,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 248 flow [2023-09-01 09:56:11,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 242 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 09:56:11,261 INFO L231 Difference]: Finished difference. Result has 39 places, 23 transitions, 144 flow [2023-09-01 09:56:11,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, 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=144, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2023-09-01 09:56:11,261 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-09-01 09:56:11,262 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 144 flow [2023-09-01 09:56:11,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:11,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:11,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:11,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:56:11,263 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 09:56:11,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:11,263 INFO L85 PathProgramCache]: Analyzing trace with hash -51683589, now seen corresponding path program 1 times [2023-09-01 09:56:11,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:11,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19984884] [2023-09-01 09:56:11,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:11,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:11,412 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 09:56:11,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:11,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19984884] [2023-09-01 09:56:11,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19984884] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:11,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:11,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:56:11,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109937562] [2023-09-01 09:56:11,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:11,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:56:11,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:11,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:56:11,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:56:11,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 145 [2023-09-01 09:56:11,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 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 09:56:11,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:11,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 145 [2023-09-01 09:56:11,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:11,483 INFO L130 PetriNetUnfolder]: 17/52 cut-off events. [2023-09-01 09:56:11,483 INFO L131 PetriNetUnfolder]: For 193/214 co-relation queries the response was YES. [2023-09-01 09:56:11,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 52 events. 17/52 cut-off events. For 193/214 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 2 based on Foata normal form. 12/62 useless extension candidates. Maximal degree in co-relation 206. Up to 28 conditions per place. [2023-09-01 09:56:11,484 INFO L137 encePairwiseOnDemand]: 139/145 looper letters, 15 selfloop transitions, 10 changer transitions 5/33 dead transitions. [2023-09-01 09:56:11,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 259 flow [2023-09-01 09:56:11,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:56:11,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:56:11,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 557 transitions. [2023-09-01 09:56:11,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548768472906404 [2023-09-01 09:56:11,486 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 557 transitions. [2023-09-01 09:56:11,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 557 transitions. [2023-09-01 09:56:11,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:11,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 557 transitions. [2023-09-01 09:56:11,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 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 09:56:11,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 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 09:56:11,489 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 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 09:56:11,490 INFO L175 Difference]: Start difference. First operand has 39 places, 23 transitions, 144 flow. Second operand 7 states and 557 transitions. [2023-09-01 09:56:11,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 259 flow [2023-09-01 09:56:11,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 219 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-09-01 09:56:11,491 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 142 flow [2023-09-01 09:56:11,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=142, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2023-09-01 09:56:11,492 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-09-01 09:56:11,492 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 142 flow [2023-09-01 09:56:11,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 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 09:56:11,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:11,493 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 09:56:11,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:56:11,493 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 09:56:11,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash -642093203, now seen corresponding path program 1 times [2023-09-01 09:56:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:11,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272295144] [2023-09-01 09:56:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:11,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:11,627 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 09:56:11,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272295144] [2023-09-01 09:56:11,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272295144] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:11,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:11,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:56:11,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519035910] [2023-09-01 09:56:11,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:11,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:11,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:11,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 145 [2023-09-01 09:56:11,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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 09:56:11,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:11,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 145 [2023-09-01 09:56:11,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:11,672 INFO L130 PetriNetUnfolder]: 18/52 cut-off events. [2023-09-01 09:56:11,672 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2023-09-01 09:56:11,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 52 events. 18/52 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 3 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 192. Up to 27 conditions per place. [2023-09-01 09:56:11,673 INFO L137 encePairwiseOnDemand]: 140/145 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-09-01 09:56:11,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 28 transitions, 216 flow [2023-09-01 09:56:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:56:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:56:11,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 379 transitions. [2023-09-01 09:56:11,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227586206896552 [2023-09-01 09:56:11,675 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 379 transitions. [2023-09-01 09:56:11,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 379 transitions. [2023-09-01 09:56:11,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:11,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 379 transitions. [2023-09-01 09:56:11,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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 09:56:11,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 09:56:11,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 09:56:11,679 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 142 flow. Second operand 5 states and 379 transitions. [2023-09-01 09:56:11,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 28 transitions, 216 flow [2023-09-01 09:56:11,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 172 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-09-01 09:56:11,680 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-09-01 09:56:11,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=5, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-09-01 09:56:11,682 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-09-01 09:56:11,682 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-09-01 09:56:11,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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 09:56:11,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 09:56:11,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 09:56:11,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 09:56:11,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 09:56:11,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 09:56:11,686 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:11,690 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:56:11,690 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:56:11,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:56:11 BasicIcfg [2023-09-01 09:56:11,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:56:11,694 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:56:11,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:56:11,695 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:56:11,695 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:56:06" (3/4) ... [2023-09-01 09:56:11,697 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:56:11,702 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:56:11,703 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:56:11,703 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-09-01 09:56:11,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 09:56:11,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 09:56:11,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:56:11,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:56:11,740 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:56:11,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:56:11,741 INFO L158 Benchmark]: Toolchain (without parser) took 6329.32ms. Allocated memory was 81.8MB in the beginning and 151.0MB in the end (delta: 69.2MB). Free memory was 58.1MB in the beginning and 112.2MB in the end (delta: -54.1MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2023-09-01 09:56:11,741 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:56:11,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.59ms. Allocated memory is still 81.8MB. Free memory was 57.9MB in the beginning and 57.7MB in the end (delta: 155.0kB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2023-09-01 09:56:11,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.10ms. Allocated memory is still 81.8MB. Free memory was 57.7MB in the beginning and 55.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:56:11,742 INFO L158 Benchmark]: Boogie Preprocessor took 51.66ms. Allocated memory is still 81.8MB. Free memory was 55.7MB in the beginning and 54.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:56:11,742 INFO L158 Benchmark]: RCFGBuilder took 470.46ms. Allocated memory is still 81.8MB. Free memory was 54.2MB in the beginning and 40.3MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 09:56:11,743 INFO L158 Benchmark]: TraceAbstraction took 5235.88ms. Allocated memory was 81.8MB in the beginning and 151.0MB in the end (delta: 69.2MB). Free memory was 40.0MB in the beginning and 114.3MB in the end (delta: -74.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:56:11,743 INFO L158 Benchmark]: Witness Printer took 45.94ms. Allocated memory is still 151.0MB. Free memory was 114.3MB in the beginning and 112.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:56:11,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 456.59ms. Allocated memory is still 81.8MB. Free memory was 57.9MB in the beginning and 57.7MB in the end (delta: 155.0kB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.10ms. Allocated memory is still 81.8MB. Free memory was 57.7MB in the beginning and 55.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.66ms. Allocated memory is still 81.8MB. Free memory was 55.7MB in the beginning and 54.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 470.46ms. Allocated memory is still 81.8MB. Free memory was 54.2MB in the beginning and 40.3MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5235.88ms. Allocated memory was 81.8MB in the beginning and 151.0MB in the end (delta: 69.2MB). Free memory was 40.0MB in the beginning and 114.3MB in the end (delta: -74.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 45.94ms. Allocated memory is still 151.0MB. Free memory was 114.3MB in the beginning and 112.2MB 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: 2.0s, 80 PlacesBefore, 27 PlacesAfterwards, 71 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 59 TotalNumberOfCompositions, 1982 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1243, independent: 1162, independent conditional: 0, independent unconditional: 1162, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 572, independent: 551, independent conditional: 0, independent unconditional: 551, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1243, independent: 611, independent conditional: 0, independent unconditional: 611, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 572, unknown conditional: 0, unknown unconditional: 572] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 109 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 282 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 502 IncrementalHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 43 mSDtfsCounter, 502 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=4, InterpolantAutomatonStates: 45, 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, 1.6s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 471 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 09:56:11,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE