./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/ldv-races/race-2_2-container_of.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 dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:59:48,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:59:48,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:59:48,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:59:48,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:59:48,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:59:48,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:59:48,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:59:48,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:59:48,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:59:48,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:59:48,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:59:48,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:59:48,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:59:48,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:59:48,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:59:48,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:59:48,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:59:48,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:59:48,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:59:48,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:59:48,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:59:48,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:59:48,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:59:48,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:59:48,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:59:48,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:59:48,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:59:48,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:59:48,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:59:48,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:59:48,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:59:48,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:59:48,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:59:48,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:59:48,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:59:48,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:59:48,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:59:48,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:59:48,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:59:48,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:59:48,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:59:48,086 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:59:48,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:59:48,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:59:48,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:59:48,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:59:48,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:59:48,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:59:48,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:59:48,088 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:59:48,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:59:48,089 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:59:48,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:59:48,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:59:48,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:59:48,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:59:48,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:59:48,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:59:48,090 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:59:48,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:59:48,090 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:59:48,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:59:48,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:59:48,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:59:48,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:59:48,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:59:48,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:59:48,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:59:48,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:59:48,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:59:48,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:59:48,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:59:48,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:59:48,092 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:59:48,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:59:48,092 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:59:48,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:59:48,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:59:48,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:59:48,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:59:48,352 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:59:48,353 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:59:48,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-08-30 16:59:49,245 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:59:49,524 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:59:49,525 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-08-30 16:59:49,540 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2a0afb7/1ea71fca365c471488a09872bcff0325/FLAGf2e12ce69 [2023-08-30 16:59:49,549 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2a0afb7/1ea71fca365c471488a09872bcff0325 [2023-08-30 16:59:49,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:59:49,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:59:49,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:59:49,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:59:49,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:59:49,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:59:49" (1/1) ... [2023-08-30 16:59:49,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40094abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:49, skipping insertion in model container [2023-08-30 16:59:49,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:59:49" (1/1) ... [2023-08-30 16:59:49,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:59:49,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:59:49,716 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 16:59:50,032 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2023-08-30 16:59:50,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:59:50,055 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:59:50,061 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 16:59:50,086 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2023-08-30 16:59:50,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:59:50,158 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:50,158 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:50,158 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:50,163 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:59:50,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50 WrapperNode [2023-08-30 16:59:50,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:59:50,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:59:50,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:59:50,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:59:50,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (1/1) ... [2023-08-30 16:59:50,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (1/1) ... [2023-08-30 16:59:50,207 INFO L138 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2023-08-30 16:59:50,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:59:50,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:59:50,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:59:50,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:59:50,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (1/1) ... [2023-08-30 16:59:50,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (1/1) ... [2023-08-30 16:59:50,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (1/1) ... [2023-08-30 16:59:50,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (1/1) ... [2023-08-30 16:59:50,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (1/1) ... [2023-08-30 16:59:50,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (1/1) ... [2023-08-30 16:59:50,228 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (1/1) ... [2023-08-30 16:59:50,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (1/1) ... [2023-08-30 16:59:50,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:59:50,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:59:50,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:59:50,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:59:50,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (1/1) ... [2023-08-30 16:59:50,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:59:50,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:59:50,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 16:59:50,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 16:59:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:59:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:59:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:59:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 16:59:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:59:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 16:59:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:59:50,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:59:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-30 16:59:50,287 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-30 16:59:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:59:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:59:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:59:50,288 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:59:50,574 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:59:50,580 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:59:50,757 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:59:50,768 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:59:50,771 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:59:50,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:50 BoogieIcfgContainer [2023-08-30 16:59:50,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:59:50,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:59:50,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:59:50,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:59:50,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:59:49" (1/3) ... [2023-08-30 16:59:50,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e790666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:59:50, skipping insertion in model container [2023-08-30 16:59:50,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:50" (2/3) ... [2023-08-30 16:59:50,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e790666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:59:50, skipping insertion in model container [2023-08-30 16:59:50,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:50" (3/3) ... [2023-08-30 16:59:50,780 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2023-08-30 16:59:50,784 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:59:50,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:59:50,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 16:59:50,790 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:59:50,855 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 16:59:50,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 147 transitions, 310 flow [2023-08-30 16:59:50,953 INFO L130 PetriNetUnfolder]: 8/185 cut-off events. [2023-08-30 16:59:50,953 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:59:50,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 185 events. 8/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 309 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-08-30 16:59:50,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 147 transitions, 310 flow [2023-08-30 16:59:50,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 135 transitions, 282 flow [2023-08-30 16:59:50,966 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:59:50,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 135 transitions, 282 flow [2023-08-30 16:59:50,975 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 135 transitions, 282 flow [2023-08-30 16:59:50,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 135 transitions, 282 flow [2023-08-30 16:59:51,009 INFO L130 PetriNetUnfolder]: 5/166 cut-off events. [2023-08-30 16:59:51,010 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:59:51,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 166 events. 5/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 257 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-08-30 16:59:51,013 INFO L119 LiptonReduction]: Number of co-enabled transitions 1780 [2023-08-30 16:59:57,178 INFO L134 LiptonReduction]: Checked pairs total: 2885 [2023-08-30 16:59:57,178 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-30 16:59:57,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:59:57,200 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;@8dd0361, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:59:57,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 16:59:57,208 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 16:59:57,209 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:59:57,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:57,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 16:59:57,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 16:59:57,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:57,214 INFO L85 PathProgramCache]: Analyzing trace with hash 484403235, now seen corresponding path program 1 times [2023-08-30 16:59:57,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:57,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090212160] [2023-08-30 16:59:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:57,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:57,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:57,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090212160] [2023-08-30 16:59:57,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090212160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:57,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:57,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:59:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982733467] [2023-08-30 16:59:57,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:57,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:59:57,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:59:57,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:59:57,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 286 [2023-08-30 16:59:57,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:57,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:57,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 286 [2023-08-30 16:59:57,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:57,852 INFO L130 PetriNetUnfolder]: 242/444 cut-off events. [2023-08-30 16:59:57,852 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 16:59:57,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 444 events. 242/444 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1815 event pairs, 137 based on Foata normal form. 17/409 useless extension candidates. Maximal degree in co-relation 830. Up to 369 conditions per place. [2023-08-30 16:59:57,857 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-08-30 16:59:57,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 144 flow [2023-08-30 16:59:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:59:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:59:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-08-30 16:59:57,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458041958041958 [2023-08-30 16:59:57,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-08-30 16:59:57,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-08-30 16:59:57,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:57,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-08-30 16:59:57,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:57,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:57,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:57,891 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 64 flow. Second operand 3 states and 393 transitions. [2023-08-30 16:59:57,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 144 flow [2023-08-30 16:59:57,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 16:59:57,895 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 90 flow [2023-08-30 16:59:57,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-08-30 16:59:57,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-30 16:59:57,901 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 90 flow [2023-08-30 16:59:57,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:57,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:57,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 16:59:57,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:59:57,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 16:59:57,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash 15625942, now seen corresponding path program 1 times [2023-08-30 16:59:57,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:57,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442511863] [2023-08-30 16:59:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:57,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:58,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:58,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442511863] [2023-08-30 16:59:58,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442511863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:58,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:58,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:59:58,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325888015] [2023-08-30 16:59:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:58,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:59:58,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:58,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:59:58,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:59:58,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 286 [2023-08-30 16:59:58,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:58,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:58,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 286 [2023-08-30 16:59:58,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:58,200 INFO L130 PetriNetUnfolder]: 275/515 cut-off events. [2023-08-30 16:59:58,200 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-08-30 16:59:58,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 515 events. 275/515 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2340 event pairs, 143 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 511. Up to 438 conditions per place. [2023-08-30 16:59:58,203 INFO L137 encePairwiseOnDemand]: 279/286 looper letters, 28 selfloop transitions, 9 changer transitions 2/40 dead transitions. [2023-08-30 16:59:58,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 210 flow [2023-08-30 16:59:58,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:59:58,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:59:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-08-30 16:59:58,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533799533799534 [2023-08-30 16:59:58,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-08-30 16:59:58,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-08-30 16:59:58,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:58,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-08-30 16:59:58,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:58,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:58,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:58,208 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 90 flow. Second operand 3 states and 389 transitions. [2023-08-30 16:59:58,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 210 flow [2023-08-30 16:59:58,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:59:58,211 INFO L231 Difference]: Finished difference. Result has 31 places, 35 transitions, 155 flow [2023-08-30 16:59:58,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=31, PETRI_TRANSITIONS=35} [2023-08-30 16:59:58,211 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-30 16:59:58,211 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 35 transitions, 155 flow [2023-08-30 16:59:58,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:58,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:58,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:58,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:59:58,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 16:59:58,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:58,213 INFO L85 PathProgramCache]: Analyzing trace with hash 957580344, now seen corresponding path program 1 times [2023-08-30 16:59:58,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:58,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068860943] [2023-08-30 16:59:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:58,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:58,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:58,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:58,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068860943] [2023-08-30 16:59:58,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068860943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:58,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:58,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:59:58,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506779764] [2023-08-30 16:59:58,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:58,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:59:58,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:58,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:59:58,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:59:58,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 286 [2023-08-30 16:59:58,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 35 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:58,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:58,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 286 [2023-08-30 16:59:58,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:58,346 INFO L130 PetriNetUnfolder]: 72/144 cut-off events. [2023-08-30 16:59:58,346 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-08-30 16:59:58,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 144 events. 72/144 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 399 event pairs, 48 based on Foata normal form. 16/159 useless extension candidates. Maximal degree in co-relation 409. Up to 105 conditions per place. [2023-08-30 16:59:58,347 INFO L137 encePairwiseOnDemand]: 283/286 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-30 16:59:58,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 24 transitions, 132 flow [2023-08-30 16:59:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:59:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:59:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-08-30 16:59:58,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836829836829837 [2023-08-30 16:59:58,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-08-30 16:59:58,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-08-30 16:59:58,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:58,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-08-30 16:59:58,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:58,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:58,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:58,352 INFO L175 Difference]: Start difference. First operand has 31 places, 35 transitions, 155 flow. Second operand 3 states and 415 transitions. [2023-08-30 16:59:58,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 24 transitions, 132 flow [2023-08-30 16:59:58,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 116 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 16:59:58,353 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 52 flow [2023-08-30 16:59:58,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-08-30 16:59:58,354 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2023-08-30 16:59:58,356 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 52 flow [2023-08-30 16:59:58,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:58,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:58,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:58,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:59:58,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 16:59:58,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:58,358 INFO L85 PathProgramCache]: Analyzing trace with hash -977371176, now seen corresponding path program 1 times [2023-08-30 16:59:58,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:58,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701124338] [2023-08-30 16:59:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:58,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:59,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701124338] [2023-08-30 16:59:59,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701124338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:59,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:59,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:59:59,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649784287] [2023-08-30 16:59:59,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:59,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 16:59:59,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:59,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 16:59:59,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 16:59:59,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 286 [2023-08-30 16:59:59,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 52 flow. Second operand has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:59,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:59,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 286 [2023-08-30 16:59:59,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:59,389 INFO L130 PetriNetUnfolder]: 94/208 cut-off events. [2023-08-30 16:59:59,389 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-08-30 16:59:59,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 208 events. 94/208 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 746 event pairs, 9 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 536. Up to 83 conditions per place. [2023-08-30 16:59:59,390 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 32 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2023-08-30 16:59:59,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 216 flow [2023-08-30 16:59:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:59:59,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:59:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 717 transitions. [2023-08-30 16:59:59,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4178321678321678 [2023-08-30 16:59:59,392 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 717 transitions. [2023-08-30 16:59:59,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 717 transitions. [2023-08-30 16:59:59,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:59,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 717 transitions. [2023-08-30 16:59:59,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:59,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:59,396 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:59,396 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 52 flow. Second operand 6 states and 717 transitions. [2023-08-30 16:59:59,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 216 flow [2023-08-30 16:59:59,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 44 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:59:59,397 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 108 flow [2023-08-30 16:59:59,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-30 16:59:59,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2023-08-30 16:59:59,398 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 108 flow [2023-08-30 16:59:59,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:59,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:59,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:59,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:59:59,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 16:59:59,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:59,400 INFO L85 PathProgramCache]: Analyzing trace with hash -315346906, now seen corresponding path program 2 times [2023-08-30 16:59:59,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:59,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400287887] [2023-08-30 16:59:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:59,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:00,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:00,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400287887] [2023-08-30 17:00:00,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400287887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:00,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:00,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 17:00:00,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923458170] [2023-08-30 17:00:00,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:00,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:00:00,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:00,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:00:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:00:00,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 286 [2023-08-30 17:00:00,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:00,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:00,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 286 [2023-08-30 17:00:00,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:00,512 INFO L130 PetriNetUnfolder]: 95/216 cut-off events. [2023-08-30 17:00:00,512 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2023-08-30 17:00:00,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 216 events. 95/216 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 789 event pairs, 26 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 621. Up to 80 conditions per place. [2023-08-30 17:00:00,513 INFO L137 encePairwiseOnDemand]: 279/286 looper letters, 31 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2023-08-30 17:00:00,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 259 flow [2023-08-30 17:00:00,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:00:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:00:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 722 transitions. [2023-08-30 17:00:00,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42074592074592077 [2023-08-30 17:00:00,515 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 722 transitions. [2023-08-30 17:00:00,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 722 transitions. [2023-08-30 17:00:00,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:00,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 722 transitions. [2023-08-30 17:00:00,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:00,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:00,519 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:00,520 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 108 flow. Second operand 6 states and 722 transitions. [2023-08-30 17:00:00,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 259 flow [2023-08-30 17:00:00,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:00:00,521 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 151 flow [2023-08-30 17:00:00,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-08-30 17:00:00,522 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-30 17:00:00,522 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 151 flow [2023-08-30 17:00:00,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:00,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:00,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:00,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 17:00:00,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 17:00:00,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:00,523 INFO L85 PathProgramCache]: Analyzing trace with hash -315346905, now seen corresponding path program 1 times [2023-08-30 17:00:00,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:00,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851594468] [2023-08-30 17:00:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:00,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:01,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:01,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851594468] [2023-08-30 17:00:01,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851594468] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:01,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:01,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:00:01,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650601658] [2023-08-30 17:00:01,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:01,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:00:01,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:01,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:00:01,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:00:02,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 286 [2023-08-30 17:00:02,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 151 flow. Second operand has 12 states, 12 states have (on average 107.41666666666667) internal successors, (1289), 12 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:02,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:02,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 286 [2023-08-30 17:00:02,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:03,165 INFO L130 PetriNetUnfolder]: 136/311 cut-off events. [2023-08-30 17:00:03,165 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2023-08-30 17:00:03,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 311 events. 136/311 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1366 event pairs, 30 based on Foata normal form. 2/312 useless extension candidates. Maximal degree in co-relation 977. Up to 178 conditions per place. [2023-08-30 17:00:03,166 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 51 selfloop transitions, 22 changer transitions 14/87 dead transitions. [2023-08-30 17:00:03,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 87 transitions, 631 flow [2023-08-30 17:00:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 17:00:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 17:00:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1450 transitions. [2023-08-30 17:00:03,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38999462076385155 [2023-08-30 17:00:03,170 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1450 transitions. [2023-08-30 17:00:03,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1450 transitions. [2023-08-30 17:00:03,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:03,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1450 transitions. [2023-08-30 17:00:03,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 111.53846153846153) internal successors, (1450), 13 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:03,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:03,176 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:03,176 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 151 flow. Second operand 13 states and 1450 transitions. [2023-08-30 17:00:03,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 87 transitions, 631 flow [2023-08-30 17:00:03,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 87 transitions, 606 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 17:00:03,179 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 395 flow [2023-08-30 17:00:03,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=395, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-30 17:00:03,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2023-08-30 17:00:03,182 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 395 flow [2023-08-30 17:00:03,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 107.41666666666667) internal successors, (1289), 12 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:03,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:03,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:03,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 17:00:03,185 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 17:00:03,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:03,185 INFO L85 PathProgramCache]: Analyzing trace with hash 279140853, now seen corresponding path program 2 times [2023-08-30 17:00:03,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:03,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291172851] [2023-08-30 17:00:03,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:03,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:04,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:04,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291172851] [2023-08-30 17:00:04,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291172851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:04,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:04,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 17:00:04,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725101478] [2023-08-30 17:00:04,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:04,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 17:00:04,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 17:00:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-08-30 17:00:05,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 286 [2023-08-30 17:00:05,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 395 flow. Second operand has 13 states, 13 states have (on average 108.3076923076923) internal successors, (1408), 13 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:05,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:05,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 286 [2023-08-30 17:00:05,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:05,865 INFO L130 PetriNetUnfolder]: 159/370 cut-off events. [2023-08-30 17:00:05,865 INFO L131 PetriNetUnfolder]: For 938/938 co-relation queries the response was YES. [2023-08-30 17:00:05,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 370 events. 159/370 cut-off events. For 938/938 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1721 event pairs, 34 based on Foata normal form. 2/369 useless extension candidates. Maximal degree in co-relation 1488. Up to 203 conditions per place. [2023-08-30 17:00:05,867 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 64 selfloop transitions, 36 changer transitions 16/116 dead transitions. [2023-08-30 17:00:05,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 116 transitions, 1067 flow [2023-08-30 17:00:05,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 17:00:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 17:00:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1465 transitions. [2023-08-30 17:00:05,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3940290478752017 [2023-08-30 17:00:05,871 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1465 transitions. [2023-08-30 17:00:05,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1465 transitions. [2023-08-30 17:00:05,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:05,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1465 transitions. [2023-08-30 17:00:05,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 112.6923076923077) internal successors, (1465), 13 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:05,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:05,880 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:05,880 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 395 flow. Second operand 13 states and 1465 transitions. [2023-08-30 17:00:05,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 116 transitions, 1067 flow [2023-08-30 17:00:05,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 116 transitions, 966 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-08-30 17:00:05,888 INFO L231 Difference]: Finished difference. Result has 63 places, 76 transitions, 689 flow [2023-08-30 17:00:05,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=689, PETRI_PLACES=63, PETRI_TRANSITIONS=76} [2023-08-30 17:00:05,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2023-08-30 17:00:05,888 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 689 flow [2023-08-30 17:00:05,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 108.3076923076923) internal successors, (1408), 13 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:05,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:05,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:05,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 17:00:05,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 17:00:05,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:05,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1141973469, now seen corresponding path program 3 times [2023-08-30 17:00:05,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:05,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408262216] [2023-08-30 17:00:05,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:05,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:06,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:06,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408262216] [2023-08-30 17:00:06,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408262216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:06,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:06,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:00:06,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059184901] [2023-08-30 17:00:06,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:06,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:00:06,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:06,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:00:06,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:00:07,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 286 [2023-08-30 17:00:07,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 689 flow. Second operand has 12 states, 12 states have (on average 107.41666666666667) internal successors, (1289), 12 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:07,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:07,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 286 [2023-08-30 17:00:07,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:08,280 INFO L130 PetriNetUnfolder]: 214/486 cut-off events. [2023-08-30 17:00:08,280 INFO L131 PetriNetUnfolder]: For 1554/1554 co-relation queries the response was YES. [2023-08-30 17:00:08,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2195 conditions, 486 events. 214/486 cut-off events. For 1554/1554 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2451 event pairs, 52 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2174. Up to 254 conditions per place. [2023-08-30 17:00:08,283 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 85 selfloop transitions, 42 changer transitions 16/143 dead transitions. [2023-08-30 17:00:08,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 143 transitions, 1449 flow [2023-08-30 17:00:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 17:00:08,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 17:00:08,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1674 transitions. [2023-08-30 17:00:08,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902097902097902 [2023-08-30 17:00:08,287 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1674 transitions. [2023-08-30 17:00:08,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1674 transitions. [2023-08-30 17:00:08,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:08,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1674 transitions. [2023-08-30 17:00:08,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 111.6) internal successors, (1674), 15 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:08,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 286.0) internal successors, (4576), 16 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:08,295 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 286.0) internal successors, (4576), 16 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:08,295 INFO L175 Difference]: Start difference. First operand has 63 places, 76 transitions, 689 flow. Second operand 15 states and 1674 transitions. [2023-08-30 17:00:08,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 143 transitions, 1449 flow [2023-08-30 17:00:08,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 143 transitions, 1345 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-08-30 17:00:08,302 INFO L231 Difference]: Finished difference. Result has 78 places, 96 transitions, 987 flow [2023-08-30 17:00:08,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=987, PETRI_PLACES=78, PETRI_TRANSITIONS=96} [2023-08-30 17:00:08,303 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2023-08-30 17:00:08,303 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 96 transitions, 987 flow [2023-08-30 17:00:08,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 107.41666666666667) internal successors, (1289), 12 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:08,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:08,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:08,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 17:00:08,304 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 17:00:08,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1612037109, now seen corresponding path program 4 times [2023-08-30 17:00:08,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:08,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252712640] [2023-08-30 17:00:08,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:08,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:09,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:09,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252712640] [2023-08-30 17:00:09,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252712640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:09,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:09,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 17:00:09,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350876375] [2023-08-30 17:00:09,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:09,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 17:00:09,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:09,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 17:00:09,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-08-30 17:00:10,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 286 [2023-08-30 17:00:10,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 96 transitions, 987 flow. Second operand has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:10,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:10,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 286 [2023-08-30 17:00:10,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:10,707 INFO L130 PetriNetUnfolder]: 303/653 cut-off events. [2023-08-30 17:00:10,708 INFO L131 PetriNetUnfolder]: For 2475/2475 co-relation queries the response was YES. [2023-08-30 17:00:10,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3212 conditions, 653 events. 303/653 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3501 event pairs, 59 based on Foata normal form. 2/652 useless extension candidates. Maximal degree in co-relation 3185. Up to 374 conditions per place. [2023-08-30 17:00:10,712 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 89 selfloop transitions, 62 changer transitions 15/166 dead transitions. [2023-08-30 17:00:10,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 166 transitions, 1909 flow [2023-08-30 17:00:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 17:00:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 17:00:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1341 transitions. [2023-08-30 17:00:10,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39073426573426573 [2023-08-30 17:00:10,717 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1341 transitions. [2023-08-30 17:00:10,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1341 transitions. [2023-08-30 17:00:10,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:10,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1341 transitions. [2023-08-30 17:00:10,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 111.75) internal successors, (1341), 12 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:10,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 286.0) internal successors, (3718), 13 states have internal predecessors, (3718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:10,723 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 286.0) internal successors, (3718), 13 states have internal predecessors, (3718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:10,724 INFO L175 Difference]: Start difference. First operand has 78 places, 96 transitions, 987 flow. Second operand 12 states and 1341 transitions. [2023-08-30 17:00:10,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 166 transitions, 1909 flow [2023-08-30 17:00:10,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 166 transitions, 1832 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-08-30 17:00:10,733 INFO L231 Difference]: Finished difference. Result has 86 places, 124 transitions, 1443 flow [2023-08-30 17:00:10,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1443, PETRI_PLACES=86, PETRI_TRANSITIONS=124} [2023-08-30 17:00:10,734 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-08-30 17:00:10,734 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 124 transitions, 1443 flow [2023-08-30 17:00:10,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:10,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:10,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:10,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 17:00:10,735 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 17:00:10,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash 414718599, now seen corresponding path program 5 times [2023-08-30 17:00:10,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:10,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469922279] [2023-08-30 17:00:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:11,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469922279] [2023-08-30 17:00:11,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469922279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:11,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:11,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 17:00:11,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877494651] [2023-08-30 17:00:11,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:11,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 17:00:11,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:11,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 17:00:11,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-08-30 17:00:12,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 286 [2023-08-30 17:00:12,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 124 transitions, 1443 flow. Second operand has 13 states, 13 states have (on average 108.3076923076923) internal successors, (1408), 13 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:12,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:12,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 286 [2023-08-30 17:00:12,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:13,104 INFO L130 PetriNetUnfolder]: 347/809 cut-off events. [2023-08-30 17:00:13,104 INFO L131 PetriNetUnfolder]: For 3823/3823 co-relation queries the response was YES. [2023-08-30 17:00:13,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4243 conditions, 809 events. 347/809 cut-off events. For 3823/3823 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4899 event pairs, 97 based on Foata normal form. 2/805 useless extension candidates. Maximal degree in co-relation 4212. Up to 448 conditions per place. [2023-08-30 17:00:13,109 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 143 selfloop transitions, 61 changer transitions 16/220 dead transitions. [2023-08-30 17:00:13,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 220 transitions, 2706 flow [2023-08-30 17:00:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 17:00:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 17:00:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1590 transitions. [2023-08-30 17:00:13,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3971028971028971 [2023-08-30 17:00:13,113 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1590 transitions. [2023-08-30 17:00:13,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1590 transitions. [2023-08-30 17:00:13,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:13,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1590 transitions. [2023-08-30 17:00:13,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 113.57142857142857) internal successors, (1590), 14 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:13,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:13,121 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:13,121 INFO L175 Difference]: Start difference. First operand has 86 places, 124 transitions, 1443 flow. Second operand 14 states and 1590 transitions. [2023-08-30 17:00:13,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 220 transitions, 2706 flow [2023-08-30 17:00:13,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 220 transitions, 2627 flow, removed 36 selfloop flow, removed 4 redundant places. [2023-08-30 17:00:13,140 INFO L231 Difference]: Finished difference. Result has 100 places, 158 transitions, 2003 flow [2023-08-30 17:00:13,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2003, PETRI_PLACES=100, PETRI_TRANSITIONS=158} [2023-08-30 17:00:13,142 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2023-08-30 17:00:13,142 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 158 transitions, 2003 flow [2023-08-30 17:00:13,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 108.3076923076923) internal successors, (1408), 13 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:13,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:13,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:13,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 17:00:13,143 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 17:00:13,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:13,143 INFO L85 PathProgramCache]: Analyzing trace with hash -866076185, now seen corresponding path program 6 times [2023-08-30 17:00:13,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:13,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230844767] [2023-08-30 17:00:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:13,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:14,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:14,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230844767] [2023-08-30 17:00:14,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230844767] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:14,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:14,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 17:00:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103849664] [2023-08-30 17:00:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:14,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 17:00:14,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:14,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 17:00:14,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-08-30 17:00:14,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 286 [2023-08-30 17:00:14,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 158 transitions, 2003 flow. Second operand has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:14,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:14,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 286 [2023-08-30 17:00:14,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:15,532 INFO L130 PetriNetUnfolder]: 344/801 cut-off events. [2023-08-30 17:00:15,533 INFO L131 PetriNetUnfolder]: For 4889/4889 co-relation queries the response was YES. [2023-08-30 17:00:15,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 801 events. 344/801 cut-off events. For 4889/4889 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4824 event pairs, 115 based on Foata normal form. 2/797 useless extension candidates. Maximal degree in co-relation 4436. Up to 520 conditions per place. [2023-08-30 17:00:15,538 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 134 selfloop transitions, 58 changer transitions 15/207 dead transitions. [2023-08-30 17:00:15,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 207 transitions, 2727 flow [2023-08-30 17:00:15,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 17:00:15,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 17:00:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1568 transitions. [2023-08-30 17:00:15,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2023-08-30 17:00:15,542 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1568 transitions. [2023-08-30 17:00:15,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1568 transitions. [2023-08-30 17:00:15,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:15,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1568 transitions. [2023-08-30 17:00:15,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:15,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:15,558 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:15,558 INFO L175 Difference]: Start difference. First operand has 100 places, 158 transitions, 2003 flow. Second operand 14 states and 1568 transitions. [2023-08-30 17:00:15,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 207 transitions, 2727 flow [2023-08-30 17:00:15,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 207 transitions, 2630 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-08-30 17:00:15,574 INFO L231 Difference]: Finished difference. Result has 110 places, 163 transitions, 2144 flow [2023-08-30 17:00:15,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2144, PETRI_PLACES=110, PETRI_TRANSITIONS=163} [2023-08-30 17:00:15,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2023-08-30 17:00:15,575 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 163 transitions, 2144 flow [2023-08-30 17:00:15,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:15,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:15,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:15,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 17:00:15,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 17:00:15,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:15,576 INFO L85 PathProgramCache]: Analyzing trace with hash -627786791, now seen corresponding path program 7 times [2023-08-30 17:00:15,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:15,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383022896] [2023-08-30 17:00:15,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:15,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 17:00:15,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 17:00:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 17:00:15,666 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 17:00:15,667 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 17:00:15,667 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-30 17:00:15,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-30 17:00:15,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-30 17:00:15,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-30 17:00:15,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-30 17:00:15,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-08-30 17:00:15,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 17:00:15,671 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1, 1] [2023-08-30 17:00:15,674 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 17:00:15,674 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 17:00:15,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:00:15 BasicIcfg [2023-08-30 17:00:15,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 17:00:15,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 17:00:15,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 17:00:15,719 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 17:00:15,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:50" (3/4) ... [2023-08-30 17:00:15,720 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 17:00:15,750 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 17:00:15,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 17:00:15,751 INFO L158 Benchmark]: Toolchain (without parser) took 26198.31ms. Allocated memory was 56.6MB in the beginning and 536.9MB in the end (delta: 480.2MB). Free memory was 31.0MB in the beginning and 352.8MB in the end (delta: -321.7MB). Peak memory consumption was 161.5MB. Max. memory is 16.1GB. [2023-08-30 17:00:15,751 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 46.1MB. Free memory was 24.4MB in the beginning and 24.4MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 17:00:15,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 610.21ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 30.9MB in the beginning and 28.8MB in the end (delta: 2.1MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2023-08-30 17:00:15,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.23ms. Allocated memory is still 69.2MB. Free memory was 28.8MB in the beginning and 42.1MB in the end (delta: -13.2MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2023-08-30 17:00:15,751 INFO L158 Benchmark]: Boogie Preprocessor took 25.10ms. Allocated memory is still 69.2MB. Free memory was 42.1MB in the beginning and 39.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:00:15,752 INFO L158 Benchmark]: RCFGBuilder took 539.98ms. Allocated memory is still 69.2MB. Free memory was 39.4MB in the beginning and 30.9MB in the end (delta: 8.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 17:00:15,752 INFO L158 Benchmark]: TraceAbstraction took 24942.11ms. Allocated memory was 69.2MB in the beginning and 536.9MB in the end (delta: 467.7MB). Free memory was 30.3MB in the beginning and 360.1MB in the end (delta: -329.8MB). Peak memory consumption was 137.3MB. Max. memory is 16.1GB. [2023-08-30 17:00:15,752 INFO L158 Benchmark]: Witness Printer took 32.12ms. Allocated memory is still 536.9MB. Free memory was 360.1MB in the beginning and 352.8MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-30 17:00:15,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 46.1MB. Free memory was 24.4MB in the beginning and 24.4MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 610.21ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 30.9MB in the beginning and 28.8MB in the end (delta: 2.1MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.23ms. Allocated memory is still 69.2MB. Free memory was 28.8MB in the beginning and 42.1MB in the end (delta: -13.2MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.10ms. Allocated memory is still 69.2MB. Free memory was 42.1MB in the beginning and 39.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 539.98ms. Allocated memory is still 69.2MB. Free memory was 39.4MB in the beginning and 30.9MB in the end (delta: 8.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 24942.11ms. Allocated memory was 69.2MB in the beginning and 536.9MB in the end (delta: 467.7MB). Free memory was 30.3MB in the beginning and 360.1MB in the end (delta: -329.8MB). Peak memory consumption was 137.3MB. Max. memory is 16.1GB. * Witness Printer took 32.12ms. Allocated memory is still 536.9MB. Free memory was 360.1MB in the beginning and 352.8MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2s, 137 PlacesBefore, 30 PlacesAfterwards, 135 TransitionsBefore, 26 TransitionsAfterwards, 1780 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 139 TotalNumberOfCompositions, 2885 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1578, independent: 1447, independent conditional: 0, independent unconditional: 1447, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 929, independent: 897, independent conditional: 0, independent unconditional: 897, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1578, independent: 550, independent conditional: 0, independent unconditional: 550, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 929, unknown conditional: 0, unknown unconditional: 929] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1731] CALL, EXPR 0 my_drv_init() [L1725] 0 return 0; [L1731] RET, EXPR 0 my_drv_init() [L1731] 0 int ret = my_drv_init(); [L1732] COND TRUE 0 ret==0 [L1733] 0 int probe_ret; [L1734] 0 struct my_data data; [L1735] CALL, EXPR 0 my_drv_probe(&data) [L1704] 0 struct device *d = &data->dev; [L1706] 0 data->shared.a = 0 [L1707] 0 data->shared.b = 0 [L1708] 0 int res = __VERIFIER_nondet_int(); [L1709] COND FALSE 0 !(\read(res)) [L1711] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={6:24}, d={6:24}, data={6:0}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-2, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1712] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=-1, res=0, t1={3:0}, t2={4:0}] [L1713] 0 return 0; [L1735] RET, EXPR 0 my_drv_probe(&data) [L1689] 2 struct device *dev = (struct device*)arg; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 2 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1735] 0 probe_ret = my_drv_probe(&data) [L1736] COND TRUE 0 probe_ret==0 [L1737] CALL 0 my_drv_disconnect(&data) [L1719] 0 void *status; [L1720] 0 \read(t1) VAL [\read(t1)=-2, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1696] EXPR 1 data->shared.b [L1696] 1 int lb = data->shared.b; [L1699] 1 data->shared.b = lb + 1 [L1701] 1 return 0; [L1699] 2 data->shared.b = lb + 1 [L1701] 2 return 0; [L1720] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=-2, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t1, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1721] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1721] FCALL, JOIN 2 pthread_join(t2, &status) VAL [\read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t2, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1737] RET 0 my_drv_disconnect(&data) [L1738] EXPR 0 data.shared.a [L1738] CALL 0 ldv_assert(data.shared.a==1) [L1675] COND FALSE 0 !(!expression) [L1738] RET 0 ldv_assert(data.shared.a==1) [L1739] EXPR 0 data.shared.b [L1739] CALL 0 ldv_assert(data.shared.b==2) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, expression=0, lb=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1711]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 154 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2433 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1969 mSDsluCounter, 2014 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1996 mSDsCounter, 293 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14622 IncrementalHoareTripleChecker+Invalid, 14915 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 293 mSolverCounterUnsat, 18 mSDtfsCounter, 14622 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2144occurred in iteration=11, InterpolantAutomatonStates: 102, 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, 0.3s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 3191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-30 17:00:15,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE