./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa --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 16:53:29,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:53:29,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:53:29,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:53:29,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:53:29,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:53:29,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:53:29,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:53:29,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:53:29,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:53:29,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:53:29,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:53:29,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:53:29,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:53:29,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:53:29,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:53:29,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:53:29,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:53:29,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:53:29,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:53:29,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:53:29,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:53:29,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:53:29,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:53:29,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:53:29,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:53:29,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:53:29,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:53:29,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:53:29,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:53:29,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:53:29,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:53:29,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:53:29,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:53:29,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:53:29,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:53:29,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:53:29,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:53:29,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:53:29,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:53:29,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:53:29,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:53:29,228 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:53:29,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:53:29,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:53:29,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:53:29,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:53:29,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:53:29,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:53:29,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:53:29,233 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:53:29,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:53:29,234 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:53:29,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:53:29,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:53:29,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:53:29,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:53:29,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:53:29,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:53:29,235 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:53:29,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:53:29,236 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:53:29,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:53:29,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:53:29,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:53:29,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:53:29,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:53:29,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:53:29,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:53:29,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:53:29,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:53:29,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:53:29,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:53:29,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:53:29,238 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:53:29,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:53:29,238 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:53:29,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:53:29,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:53:29,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:53:29,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:53:29,565 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:53:29,565 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:53:29,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-08-30 16:53:30,686 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:53:30,985 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:53:30,986 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-08-30 16:53:31,001 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba9eef3c/9cde65e6faf4441d8232f500a164c77f/FLAG72e82dc88 [2023-08-30 16:53:31,015 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba9eef3c/9cde65e6faf4441d8232f500a164c77f [2023-08-30 16:53:31,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:53:31,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:53:31,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:53:31,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:53:31,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:53:31,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ff86d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31, skipping insertion in model container [2023-08-30 16:53:31,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:53:31,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:53:31,260 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-08-30 16:53:31,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:53:31,551 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:53:31,561 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-08-30 16:53:31,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:53:31,616 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:53:31,616 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:53:31,622 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:53:31,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31 WrapperNode [2023-08-30 16:53:31,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:53:31,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:53:31,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:53:31,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:53:31,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,669 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 154 [2023-08-30 16:53:31,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:53:31,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:53:31,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:53:31,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:53:31,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,694 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:53:31,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:53:31,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:53:31,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:53:31,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (1/1) ... [2023-08-30 16:53:31,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:53:31,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:53:31,750 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 16:53:31,776 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 16:53:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:53:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:53:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:53:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:53:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:53:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:53:31,792 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:53:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:53:31,793 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:53:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:53:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:53:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:53:31,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:53:31,795 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 16:53:32,000 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:53:32,001 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:53:32,383 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:53:32,603 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:53:32,604 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:53:32,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:53:32 BoogieIcfgContainer [2023-08-30 16:53:32,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:53:32,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:53:32,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:53:32,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:53:32,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:53:31" (1/3) ... [2023-08-30 16:53:32,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17436975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:53:32, skipping insertion in model container [2023-08-30 16:53:32,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:31" (2/3) ... [2023-08-30 16:53:32,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17436975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:53:32, skipping insertion in model container [2023-08-30 16:53:32,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:53:32" (3/3) ... [2023-08-30 16:53:32,616 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-08-30 16:53:32,623 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:53:32,631 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:53:32,632 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 16:53:32,632 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:53:32,689 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:53:32,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 92 transitions, 194 flow [2023-08-30 16:53:32,784 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-08-30 16:53:32,784 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:53:32,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-08-30 16:53:32,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 92 transitions, 194 flow [2023-08-30 16:53:32,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 90 transitions, 186 flow [2023-08-30 16:53:32,804 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:53:32,817 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 90 transitions, 186 flow [2023-08-30 16:53:32,821 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 90 transitions, 186 flow [2023-08-30 16:53:32,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 90 transitions, 186 flow [2023-08-30 16:53:32,860 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-08-30 16:53:32,861 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:53:32,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-08-30 16:53:32,863 INFO L119 LiptonReduction]: Number of co-enabled transitions 1244 [2023-08-30 16:53:36,709 INFO L134 LiptonReduction]: Checked pairs total: 3453 [2023-08-30 16:53:36,709 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-30 16:53:36,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:53:36,728 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;@334e4128, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:53:36,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 16:53:36,732 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 16:53:36,733 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:53:36,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:36,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 16:53:36,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:36,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash 469001348, now seen corresponding path program 1 times [2023-08-30 16:53:36,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:36,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582085213] [2023-08-30 16:53:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:36,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:37,135 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 16:53:37,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:37,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582085213] [2023-08-30 16:53:37,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582085213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:37,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:37,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:53:37,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214891507] [2023-08-30 16:53:37,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:37,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:53:37,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:37,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:53:37,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:53:37,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-08-30 16:53:37,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 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 16:53:37,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:37,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-08-30 16:53:37,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:37,394 INFO L130 PetriNetUnfolder]: 275/468 cut-off events. [2023-08-30 16:53:37,395 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 16:53:37,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 468 events. 275/468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1808 event pairs, 30 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 944. Up to 396 conditions per place. [2023-08-30 16:53:37,401 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 23 selfloop transitions, 2 changer transitions 2/27 dead transitions. [2023-08-30 16:53:37,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 114 flow [2023-08-30 16:53:37,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:53:37,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:53:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-08-30 16:53:37,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49903660886319845 [2023-08-30 16:53:37,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-08-30 16:53:37,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-08-30 16:53:37,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:37,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-08-30 16:53:37,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 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 16:53:37,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 16:53:37,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 16:53:37,437 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 44 flow. Second operand 3 states and 259 transitions. [2023-08-30 16:53:37,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 114 flow [2023-08-30 16:53:37,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:37,442 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 42 flow [2023-08-30 16:53:37,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=40, 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=42, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-30 16:53:37,447 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-08-30 16:53:37,447 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 42 flow [2023-08-30 16:53:37,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 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 16:53:37,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:37,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:37,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:53:37,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:37,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:37,453 INFO L85 PathProgramCache]: Analyzing trace with hash -261224281, now seen corresponding path program 1 times [2023-08-30 16:53:37,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:37,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677898205] [2023-08-30 16:53:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:37,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:38,211 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 16:53:38,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:38,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677898205] [2023-08-30 16:53:38,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677898205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:38,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:38,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:53:38,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988304530] [2023-08-30 16:53:38,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:38,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:53:38,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:38,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:53:38,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:53:38,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-30 16:53:38,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 16:53:38,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:38,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-30 16:53:38,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:38,385 INFO L130 PetriNetUnfolder]: 182/321 cut-off events. [2023-08-30 16:53:38,386 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 16:53:38,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 321 events. 182/321 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1109 event pairs, 80 based on Foata normal form. 18/339 useless extension candidates. Maximal degree in co-relation 671. Up to 193 conditions per place. [2023-08-30 16:53:38,390 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-30 16:53:38,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 116 flow [2023-08-30 16:53:38,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:53:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:53:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-30 16:53:38,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45664739884393063 [2023-08-30 16:53:38,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-30 16:53:38,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-30 16:53:38,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:38,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-30 16:53:38,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 16:53:38,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 16:53:38,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 16:53:38,398 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 42 flow. Second operand 3 states and 237 transitions. [2023-08-30 16:53:38,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 116 flow [2023-08-30 16:53:38,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:38,399 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 46 flow [2023-08-30 16:53:38,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-30 16:53:38,400 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-08-30 16:53:38,401 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 46 flow [2023-08-30 16:53:38,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 16:53:38,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:38,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:38,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:53:38,402 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:38,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:38,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1688167736, now seen corresponding path program 1 times [2023-08-30 16:53:38,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:38,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856938424] [2023-08-30 16:53:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:38,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:39,022 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 16:53:39,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:39,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856938424] [2023-08-30 16:53:39,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856938424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:39,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:39,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:53:39,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130063711] [2023-08-30 16:53:39,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:39,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:53:39,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:53:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:53:39,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-30 16:53:39,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:39,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:39,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-30 16:53:39,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:39,146 INFO L130 PetriNetUnfolder]: 172/305 cut-off events. [2023-08-30 16:53:39,146 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-30 16:53:39,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 305 events. 172/305 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1009 event pairs, 56 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 670. Up to 210 conditions per place. [2023-08-30 16:53:39,148 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-30 16:53:39,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 111 flow [2023-08-30 16:53:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:53:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:53:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-08-30 16:53:39,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527938342967245 [2023-08-30 16:53:39,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-08-30 16:53:39,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-08-30 16:53:39,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:39,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-08-30 16:53:39,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 16:53:39,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 16:53:39,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 16:53:39,153 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 46 flow. Second operand 3 states and 235 transitions. [2023-08-30 16:53:39,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 111 flow [2023-08-30 16:53:39,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:39,155 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 50 flow [2023-08-30 16:53:39,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-08-30 16:53:39,155 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-08-30 16:53:39,156 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 50 flow [2023-08-30 16:53:39,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:39,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:39,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:39,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:53:39,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:39,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:39,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2112271550, now seen corresponding path program 1 times [2023-08-30 16:53:39,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:39,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825508480] [2023-08-30 16:53:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:39,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:40,441 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 16:53:40,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:40,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825508480] [2023-08-30 16:53:40,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825508480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:40,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:40,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:53:40,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129992181] [2023-08-30 16:53:40,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:40,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 16:53:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:40,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 16:53:40,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 16:53:40,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-30 16:53:40,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 50 flow. Second operand has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 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 16:53:40,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:40,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-30 16:53:40,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:40,755 INFO L130 PetriNetUnfolder]: 211/371 cut-off events. [2023-08-30 16:53:40,755 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 16:53:40,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 371 events. 211/371 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1339 event pairs, 21 based on Foata normal form. 6/377 useless extension candidates. Maximal degree in co-relation 860. Up to 172 conditions per place. [2023-08-30 16:53:40,757 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 38 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2023-08-30 16:53:40,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 200 flow [2023-08-30 16:53:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:53:40,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:53:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2023-08-30 16:53:40,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489402697495183 [2023-08-30 16:53:40,759 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2023-08-30 16:53:40,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2023-08-30 16:53:40,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:40,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2023-08-30 16:53:40,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 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 16:53:40,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 16:53:40,764 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 16:53:40,764 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 50 flow. Second operand 6 states and 466 transitions. [2023-08-30 16:53:40,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 200 flow [2023-08-30 16:53:40,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:40,766 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 77 flow [2023-08-30 16:53:40,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-08-30 16:53:40,767 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-08-30 16:53:40,767 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 77 flow [2023-08-30 16:53:40,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 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 16:53:40,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:40,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:40,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:53:40,768 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:40,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:40,769 INFO L85 PathProgramCache]: Analyzing trace with hash -299346199, now seen corresponding path program 1 times [2023-08-30 16:53:40,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:40,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209204865] [2023-08-30 16:53:40,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:40,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:41,520 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 16:53:41,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:41,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209204865] [2023-08-30 16:53:41,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209204865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:41,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:41,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:53:41,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278610151] [2023-08-30 16:53:41,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:41,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:53:41,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:53:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:53:41,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 173 [2023-08-30 16:53:41,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 16:53:41,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:41,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 173 [2023-08-30 16:53:41,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:41,854 INFO L130 PetriNetUnfolder]: 270/474 cut-off events. [2023-08-30 16:53:41,854 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2023-08-30 16:53:41,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 474 events. 270/474 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1841 event pairs, 21 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 1220. Up to 326 conditions per place. [2023-08-30 16:53:41,857 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 34 selfloop transitions, 18 changer transitions 0/52 dead transitions. [2023-08-30 16:53:41,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 271 flow [2023-08-30 16:53:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:53:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:53:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 457 transitions. [2023-08-30 16:53:41,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44026974951830444 [2023-08-30 16:53:41,860 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 457 transitions. [2023-08-30 16:53:41,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 457 transitions. [2023-08-30 16:53:41,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:41,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 457 transitions. [2023-08-30 16:53:41,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:41,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 16:53:41,864 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 16:53:41,864 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 77 flow. Second operand 6 states and 457 transitions. [2023-08-30 16:53:41,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 271 flow [2023-08-30 16:53:41,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:53:41,867 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 198 flow [2023-08-30 16:53:41,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-08-30 16:53:41,867 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-08-30 16:53:41,868 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 198 flow [2023-08-30 16:53:41,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 16:53:41,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:41,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:41,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:53:41,869 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:41,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:41,869 INFO L85 PathProgramCache]: Analyzing trace with hash 483559013, now seen corresponding path program 2 times [2023-08-30 16:53:41,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:41,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448738099] [2023-08-30 16:53:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:41,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:42,364 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 16:53:42,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:42,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448738099] [2023-08-30 16:53:42,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448738099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:42,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:42,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:53:42,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393418812] [2023-08-30 16:53:42,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:42,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:53:42,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:42,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:53:42,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:53:42,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-08-30 16:53:42,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 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 16:53:42,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:42,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-08-30 16:53:42,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:42,630 INFO L130 PetriNetUnfolder]: 355/633 cut-off events. [2023-08-30 16:53:42,630 INFO L131 PetriNetUnfolder]: For 677/677 co-relation queries the response was YES. [2023-08-30 16:53:42,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 633 events. 355/633 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2777 event pairs, 61 based on Foata normal form. 12/645 useless extension candidates. Maximal degree in co-relation 2076. Up to 267 conditions per place. [2023-08-30 16:53:42,634 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 27 selfloop transitions, 13 changer transitions 30/70 dead transitions. [2023-08-30 16:53:42,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 70 transitions, 472 flow [2023-08-30 16:53:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:53:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:53:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 486 transitions. [2023-08-30 16:53:42,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682080924855491 [2023-08-30 16:53:42,637 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 486 transitions. [2023-08-30 16:53:42,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 486 transitions. [2023-08-30 16:53:42,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:42,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 486 transitions. [2023-08-30 16:53:42,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 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 16:53:42,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 16:53:42,642 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 16:53:42,642 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 198 flow. Second operand 6 states and 486 transitions. [2023-08-30 16:53:42,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 70 transitions, 472 flow [2023-08-30 16:53:42,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:53:42,650 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 246 flow [2023-08-30 16:53:42,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-08-30 16:53:42,652 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2023-08-30 16:53:42,652 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 246 flow [2023-08-30 16:53:42,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 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 16:53:42,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:42,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:42,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:53:42,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:42,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:42,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1611175819, now seen corresponding path program 3 times [2023-08-30 16:53:42,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:42,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653721039] [2023-08-30 16:53:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:42,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:43,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653721039] [2023-08-30 16:53:43,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653721039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:43,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:43,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 16:53:43,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242091452] [2023-08-30 16:53:43,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:43,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 16:53:43,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:43,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 16:53:43,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 16:53:43,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-08-30 16:53:43,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 0 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 16:53:43,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:43,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-08-30 16:53:43,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:43,917 INFO L130 PetriNetUnfolder]: 225/454 cut-off events. [2023-08-30 16:53:43,917 INFO L131 PetriNetUnfolder]: For 1209/1209 co-relation queries the response was YES. [2023-08-30 16:53:43,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1865 conditions, 454 events. 225/454 cut-off events. For 1209/1209 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2037 event pairs, 35 based on Foata normal form. 9/463 useless extension candidates. Maximal degree in co-relation 1843. Up to 242 conditions per place. [2023-08-30 16:53:43,920 INFO L137 encePairwiseOnDemand]: 163/173 looper letters, 45 selfloop transitions, 27 changer transitions 17/89 dead transitions. [2023-08-30 16:53:43,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 89 transitions, 739 flow [2023-08-30 16:53:43,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 16:53:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 16:53:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 997 transitions. [2023-08-30 16:53:43,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44330813694975546 [2023-08-30 16:53:43,923 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 997 transitions. [2023-08-30 16:53:43,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 997 transitions. [2023-08-30 16:53:43,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:43,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 997 transitions. [2023-08-30 16:53:43,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.6923076923077) internal successors, (997), 13 states have internal predecessors, (997), 0 states have call successors, (0), 0 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 16:53:43,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 0 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 16:53:43,930 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 0 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 16:53:43,930 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 246 flow. Second operand 13 states and 997 transitions. [2023-08-30 16:53:43,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 89 transitions, 739 flow [2023-08-30 16:53:43,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 89 transitions, 669 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-30 16:53:43,936 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 442 flow [2023-08-30 16:53:43,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=442, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-08-30 16:53:43,937 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2023-08-30 16:53:43,937 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 442 flow [2023-08-30 16:53:43,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 0 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 16:53:43,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:43,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:43,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 16:53:43,938 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:43,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:43,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1038168937, now seen corresponding path program 4 times [2023-08-30 16:53:43,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:43,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654903907] [2023-08-30 16:53:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:43,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:44,476 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 16:53:44,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:44,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654903907] [2023-08-30 16:53:44,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654903907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:44,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:44,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:53:44,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942334223] [2023-08-30 16:53:44,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:44,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:53:44,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:53:44,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:53:44,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 173 [2023-08-30 16:53:44,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 442 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 16:53:44,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:44,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 173 [2023-08-30 16:53:44,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:44,684 INFO L130 PetriNetUnfolder]: 223/442 cut-off events. [2023-08-30 16:53:44,685 INFO L131 PetriNetUnfolder]: For 1509/1509 co-relation queries the response was YES. [2023-08-30 16:53:44,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 442 events. 223/442 cut-off events. For 1509/1509 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1933 event pairs, 32 based on Foata normal form. 3/445 useless extension candidates. Maximal degree in co-relation 1977. Up to 268 conditions per place. [2023-08-30 16:53:44,688 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 38 selfloop transitions, 24 changer transitions 2/64 dead transitions. [2023-08-30 16:53:44,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 657 flow [2023-08-30 16:53:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:53:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:53:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-08-30 16:53:44,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461271676300578 [2023-08-30 16:53:44,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-08-30 16:53:44,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-08-30 16:53:44,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:44,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-08-30 16:53:44,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 16:53:44,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 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 16:53:44,693 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 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 16:53:44,693 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 442 flow. Second operand 5 states and 399 transitions. [2023-08-30 16:53:44,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 657 flow [2023-08-30 16:53:44,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 613 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:44,700 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 556 flow [2023-08-30 16:53:44,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-08-30 16:53:44,700 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2023-08-30 16:53:44,701 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 556 flow [2023-08-30 16:53:44,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 16:53:44,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:44,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:44,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 16:53:44,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:44,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:44,702 INFO L85 PathProgramCache]: Analyzing trace with hash -607369889, now seen corresponding path program 5 times [2023-08-30 16:53:44,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:44,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587141712] [2023-08-30 16:53:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:44,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:45,581 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 16:53:45,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:45,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587141712] [2023-08-30 16:53:45,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587141712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:45,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:45,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 16:53:45,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665607494] [2023-08-30 16:53:45,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:45,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 16:53:45,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:45,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 16:53:45,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-30 16:53:45,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-08-30 16:53:45,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 556 flow. Second operand has 9 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 0 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 16:53:45,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:45,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-08-30 16:53:45,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:45,906 INFO L130 PetriNetUnfolder]: 253/497 cut-off events. [2023-08-30 16:53:45,906 INFO L131 PetriNetUnfolder]: For 2031/2031 co-relation queries the response was YES. [2023-08-30 16:53:45,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 497 events. 253/497 cut-off events. For 2031/2031 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2278 event pairs, 57 based on Foata normal form. 1/498 useless extension candidates. Maximal degree in co-relation 2301. Up to 254 conditions per place. [2023-08-30 16:53:45,911 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 55 selfloop transitions, 33 changer transitions 3/91 dead transitions. [2023-08-30 16:53:45,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 91 transitions, 991 flow [2023-08-30 16:53:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 16:53:45,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 16:53:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 627 transitions. [2023-08-30 16:53:45,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45303468208092484 [2023-08-30 16:53:45,914 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 627 transitions. [2023-08-30 16:53:45,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 627 transitions. [2023-08-30 16:53:45,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:45,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 627 transitions. [2023-08-30 16:53:45,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 16:53:45,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 16:53:45,919 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 16:53:45,919 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 556 flow. Second operand 8 states and 627 transitions. [2023-08-30 16:53:45,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 91 transitions, 991 flow [2023-08-30 16:53:45,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 977 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:45,929 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 796 flow [2023-08-30 16:53:45,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=796, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-08-30 16:53:45,930 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2023-08-30 16:53:45,931 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 796 flow [2023-08-30 16:53:45,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 0 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 16:53:45,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:45,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:45,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 16:53:45,932 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:45,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:45,932 INFO L85 PathProgramCache]: Analyzing trace with hash -264639987, now seen corresponding path program 6 times [2023-08-30 16:53:45,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:45,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3817845] [2023-08-30 16:53:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:45,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:47,089 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 16:53:47,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:47,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3817845] [2023-08-30 16:53:47,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3817845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:47,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:47,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:53:47,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25908762] [2023-08-30 16:53:47,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:47,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 16:53:47,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 16:53:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 16:53:47,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-08-30 16:53:47,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 796 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 16:53:47,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:47,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-08-30 16:53:47,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:47,617 INFO L130 PetriNetUnfolder]: 249/492 cut-off events. [2023-08-30 16:53:47,617 INFO L131 PetriNetUnfolder]: For 2676/2676 co-relation queries the response was YES. [2023-08-30 16:53:47,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 492 events. 249/492 cut-off events. For 2676/2676 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2253 event pairs, 63 based on Foata normal form. 5/497 useless extension candidates. Maximal degree in co-relation 2482. Up to 259 conditions per place. [2023-08-30 16:53:47,621 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 64 selfloop transitions, 29 changer transitions 2/95 dead transitions. [2023-08-30 16:53:47,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 1145 flow [2023-08-30 16:53:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 16:53:47,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 16:53:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 705 transitions. [2023-08-30 16:53:47,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527938342967245 [2023-08-30 16:53:47,624 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 705 transitions. [2023-08-30 16:53:47,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 705 transitions. [2023-08-30 16:53:47,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:47,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 705 transitions. [2023-08-30 16:53:47,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.33333333333333) internal successors, (705), 9 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:47,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 16:53:47,629 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 16:53:47,629 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 796 flow. Second operand 9 states and 705 transitions. [2023-08-30 16:53:47,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 1145 flow [2023-08-30 16:53:47,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 1115 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-08-30 16:53:47,645 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 910 flow [2023-08-30 16:53:47,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=910, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2023-08-30 16:53:47,646 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2023-08-30 16:53:47,646 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 910 flow [2023-08-30 16:53:47,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 16:53:47,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:47,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:47,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 16:53:47,647 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:47,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2118468119, now seen corresponding path program 1 times [2023-08-30 16:53:47,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:47,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770230367] [2023-08-30 16:53:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:47,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:48,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:48,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770230367] [2023-08-30 16:53:48,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770230367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:48,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:48,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 16:53:48,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799069868] [2023-08-30 16:53:48,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:48,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 16:53:48,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:48,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 16:53:48,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-30 16:53:48,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-08-30 16:53:48,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 910 flow. Second operand has 9 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 0 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 16:53:48,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:48,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-08-30 16:53:48,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:48,748 INFO L130 PetriNetUnfolder]: 252/504 cut-off events. [2023-08-30 16:53:48,749 INFO L131 PetriNetUnfolder]: For 3538/3538 co-relation queries the response was YES. [2023-08-30 16:53:48,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 504 events. 252/504 cut-off events. For 3538/3538 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2328 event pairs, 48 based on Foata normal form. 6/510 useless extension candidates. Maximal degree in co-relation 2698. Up to 292 conditions per place. [2023-08-30 16:53:48,754 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 58 selfloop transitions, 30 changer transitions 10/98 dead transitions. [2023-08-30 16:53:48,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 1233 flow [2023-08-30 16:53:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 16:53:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 16:53:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2023-08-30 16:53:48,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45407835581245987 [2023-08-30 16:53:48,757 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2023-08-30 16:53:48,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2023-08-30 16:53:48,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:48,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2023-08-30 16:53:48,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 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 16:53:48,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 16:53:48,762 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 16:53:48,762 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 910 flow. Second operand 9 states and 707 transitions. [2023-08-30 16:53:48,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 1233 flow [2023-08-30 16:53:48,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 98 transitions, 1161 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-30 16:53:48,776 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 917 flow [2023-08-30 16:53:48,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=917, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2023-08-30 16:53:48,776 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-08-30 16:53:48,777 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 917 flow [2023-08-30 16:53:48,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 0 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 16:53:48,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:48,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:48,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 16:53:48,778 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:48,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash -518458967, now seen corresponding path program 2 times [2023-08-30 16:53:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:48,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29711806] [2023-08-30 16:53:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:48,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:49,924 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 16:53:49,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:49,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29711806] [2023-08-30 16:53:49,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29711806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:49,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:49,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 16:53:49,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816835153] [2023-08-30 16:53:49,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:49,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 16:53:49,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 16:53:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-30 16:53:50,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-30 16:53:50,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 917 flow. Second operand has 11 states, 11 states have (on average 65.27272727272727) internal successors, (718), 11 states have internal predecessors, (718), 0 states have call successors, (0), 0 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 16:53:50,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:50,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-30 16:53:50,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:50,552 INFO L130 PetriNetUnfolder]: 284/573 cut-off events. [2023-08-30 16:53:50,552 INFO L131 PetriNetUnfolder]: For 3932/3932 co-relation queries the response was YES. [2023-08-30 16:53:50,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 573 events. 284/573 cut-off events. For 3932/3932 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2792 event pairs, 39 based on Foata normal form. 6/579 useless extension candidates. Maximal degree in co-relation 3089. Up to 348 conditions per place. [2023-08-30 16:53:50,557 INFO L137 encePairwiseOnDemand]: 162/173 looper letters, 60 selfloop transitions, 19 changer transitions 48/127 dead transitions. [2023-08-30 16:53:50,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 127 transitions, 1619 flow [2023-08-30 16:53:50,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 16:53:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 16:53:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 844 transitions. [2023-08-30 16:53:50,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40655105973025046 [2023-08-30 16:53:50,561 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 844 transitions. [2023-08-30 16:53:50,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 844 transitions. [2023-08-30 16:53:50,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:50,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 844 transitions. [2023-08-30 16:53:50,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 70.33333333333333) internal successors, (844), 12 states have internal predecessors, (844), 0 states have call successors, (0), 0 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 16:53:50,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 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 16:53:50,566 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 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 16:53:50,567 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 917 flow. Second operand 12 states and 844 transitions. [2023-08-30 16:53:50,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 127 transitions, 1619 flow [2023-08-30 16:53:50,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 127 transitions, 1567 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 16:53:50,580 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 910 flow [2023-08-30 16:53:50,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=910, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2023-08-30 16:53:50,581 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 71 predicate places. [2023-08-30 16:53:50,581 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 910 flow [2023-08-30 16:53:50,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.27272727272727) internal successors, (718), 11 states have internal predecessors, (718), 0 states have call successors, (0), 0 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 16:53:50,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:50,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:50,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 16:53:50,582 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:50,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1506747961, now seen corresponding path program 3 times [2023-08-30 16:53:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918285590] [2023-08-30 16:53:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:50,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:51,802 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 16:53:51,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918285590] [2023-08-30 16:53:51,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918285590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:51,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:51,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 16:53:51,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235121501] [2023-08-30 16:53:51,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:51,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 16:53:51,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:51,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 16:53:51,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 16:53:51,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-08-30 16:53:51,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 910 flow. Second operand has 9 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 0 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 16:53:51,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:51,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-08-30 16:53:51,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:52,078 INFO L130 PetriNetUnfolder]: 179/370 cut-off events. [2023-08-30 16:53:52,078 INFO L131 PetriNetUnfolder]: For 3139/3139 co-relation queries the response was YES. [2023-08-30 16:53:52,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 370 events. 179/370 cut-off events. For 3139/3139 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1563 event pairs, 29 based on Foata normal form. 6/376 useless extension candidates. Maximal degree in co-relation 2302. Up to 269 conditions per place. [2023-08-30 16:53:52,082 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 49 selfloop transitions, 22 changer transitions 13/84 dead transitions. [2023-08-30 16:53:52,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 84 transitions, 1172 flow [2023-08-30 16:53:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:53:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:53:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2023-08-30 16:53:52,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45334434351775393 [2023-08-30 16:53:52,085 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2023-08-30 16:53:52,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2023-08-30 16:53:52,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:52,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2023-08-30 16:53:52,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 16:53:52,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 16:53:52,089 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 16:53:52,089 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 910 flow. Second operand 7 states and 549 transitions. [2023-08-30 16:53:52,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 84 transitions, 1172 flow [2023-08-30 16:53:52,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 1085 flow, removed 24 selfloop flow, removed 10 redundant places. [2023-08-30 16:53:52,100 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 803 flow [2023-08-30 16:53:52,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=803, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2023-08-30 16:53:52,101 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2023-08-30 16:53:52,101 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 803 flow [2023-08-30 16:53:52,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 0 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 16:53:52,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:52,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:52,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 16:53:52,102 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:52,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:52,103 INFO L85 PathProgramCache]: Analyzing trace with hash 385804551, now seen corresponding path program 4 times [2023-08-30 16:53:52,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:52,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145051564] [2023-08-30 16:53:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:52,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:52,930 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 16:53:52,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:52,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145051564] [2023-08-30 16:53:52,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145051564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:52,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:52,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 16:53:52,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649875675] [2023-08-30 16:53:52,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:52,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 16:53:52,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:52,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 16:53:52,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 16:53:52,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 173 [2023-08-30 16:53:52,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 74.55555555555556) internal successors, (671), 9 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 16:53:52,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:52,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 173 [2023-08-30 16:53:52,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:53,413 INFO L130 PetriNetUnfolder]: 191/395 cut-off events. [2023-08-30 16:53:53,413 INFO L131 PetriNetUnfolder]: For 3040/3040 co-relation queries the response was YES. [2023-08-30 16:53:53,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 395 events. 191/395 cut-off events. For 3040/3040 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1696 event pairs, 23 based on Foata normal form. 10/405 useless extension candidates. Maximal degree in co-relation 2205. Up to 117 conditions per place. [2023-08-30 16:53:53,417 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 48 selfloop transitions, 12 changer transitions 41/101 dead transitions. [2023-08-30 16:53:53,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1237 flow [2023-08-30 16:53:53,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 16:53:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 16:53:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 942 transitions. [2023-08-30 16:53:53,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45375722543352603 [2023-08-30 16:53:53,420 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 942 transitions. [2023-08-30 16:53:53,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 942 transitions. [2023-08-30 16:53:53,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:53,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 942 transitions. [2023-08-30 16:53:53,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 78.5) internal successors, (942), 12 states have internal predecessors, (942), 0 states have call successors, (0), 0 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 16:53:53,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 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 16:53:53,426 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 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 16:53:53,426 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 803 flow. Second operand 12 states and 942 transitions. [2023-08-30 16:53:53,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1237 flow [2023-08-30 16:53:53,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1146 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-30 16:53:53,435 INFO L231 Difference]: Finished difference. Result has 90 places, 43 transitions, 515 flow [2023-08-30 16:53:53,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=515, PETRI_PLACES=90, PETRI_TRANSITIONS=43} [2023-08-30 16:53:53,436 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2023-08-30 16:53:53,436 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 43 transitions, 515 flow [2023-08-30 16:53:53,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 74.55555555555556) internal successors, (671), 9 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 16:53:53,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:53,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:53,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 16:53:53,437 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:53,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:53,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1893787813, now seen corresponding path program 1 times [2023-08-30 16:53:53,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:53,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144918059] [2023-08-30 16:53:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:53,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:53,954 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 16:53:53,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:53,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144918059] [2023-08-30 16:53:53,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144918059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:53,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:53,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:53:53,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334002798] [2023-08-30 16:53:53,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:53,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 16:53:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:53,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 16:53:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 16:53:53,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-08-30 16:53:53,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 43 transitions, 515 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 16:53:53,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:53,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-08-30 16:53:53,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:54,156 INFO L130 PetriNetUnfolder]: 76/183 cut-off events. [2023-08-30 16:53:54,156 INFO L131 PetriNetUnfolder]: For 2068/2068 co-relation queries the response was YES. [2023-08-30 16:53:54,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 183 events. 76/183 cut-off events. For 2068/2068 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 626 event pairs, 27 based on Foata normal form. 10/193 useless extension candidates. Maximal degree in co-relation 1047. Up to 92 conditions per place. [2023-08-30 16:53:54,158 INFO L137 encePairwiseOnDemand]: 163/173 looper letters, 30 selfloop transitions, 10 changer transitions 18/58 dead transitions. [2023-08-30 16:53:54,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 58 transitions, 775 flow [2023-08-30 16:53:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:53:54,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:53:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 535 transitions. [2023-08-30 16:53:54,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44178364987613544 [2023-08-30 16:53:54,162 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 535 transitions. [2023-08-30 16:53:54,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 535 transitions. [2023-08-30 16:53:54,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:54,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 535 transitions. [2023-08-30 16:53:54,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.42857142857143) internal successors, (535), 7 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 16:53:54,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 16:53:54,167 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 16:53:54,167 INFO L175 Difference]: Start difference. First operand has 90 places, 43 transitions, 515 flow. Second operand 7 states and 535 transitions. [2023-08-30 16:53:54,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 58 transitions, 775 flow [2023-08-30 16:53:54,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 604 flow, removed 53 selfloop flow, removed 23 redundant places. [2023-08-30 16:53:54,173 INFO L231 Difference]: Finished difference. Result has 68 places, 38 transitions, 367 flow [2023-08-30 16:53:54,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=68, PETRI_TRANSITIONS=38} [2023-08-30 16:53:54,174 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2023-08-30 16:53:54,174 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 38 transitions, 367 flow [2023-08-30 16:53:54,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 16:53:54,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:54,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:54,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 16:53:54,175 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:54,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash -916025961, now seen corresponding path program 2 times [2023-08-30 16:53:54,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:54,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234909559] [2023-08-30 16:53:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:54,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:54,688 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 16:53:54,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:54,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234909559] [2023-08-30 16:53:54,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234909559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:54,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:54,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:53:54,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118276933] [2023-08-30 16:53:54,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:54,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 16:53:54,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:54,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 16:53:54,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 16:53:54,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-08-30 16:53:54,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 38 transitions, 367 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 16:53:54,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:54,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-08-30 16:53:54,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:54,851 INFO L130 PetriNetUnfolder]: 39/104 cut-off events. [2023-08-30 16:53:54,851 INFO L131 PetriNetUnfolder]: For 594/594 co-relation queries the response was YES. [2023-08-30 16:53:54,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 104 events. 39/104 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 270 event pairs, 15 based on Foata normal form. 10/114 useless extension candidates. Maximal degree in co-relation 481. Up to 32 conditions per place. [2023-08-30 16:53:54,852 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-08-30 16:53:54,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 40 transitions, 425 flow [2023-08-30 16:53:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:53:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:53:54,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2023-08-30 16:53:54,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435177539223782 [2023-08-30 16:53:54,854 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2023-08-30 16:53:54,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2023-08-30 16:53:54,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:54,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2023-08-30 16:53:54,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 0 states have call successors, (0), 0 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 16:53:54,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 16:53:54,857 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 16:53:54,857 INFO L175 Difference]: Start difference. First operand has 68 places, 38 transitions, 367 flow. Second operand 7 states and 527 transitions. [2023-08-30 16:53:54,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 40 transitions, 425 flow [2023-08-30 16:53:54,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 40 transitions, 355 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-08-30 16:53:54,860 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-08-30 16:53:54,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-08-30 16:53:54,860 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2023-08-30 16:53:54,861 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-08-30 16:53:54,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 16:53:54,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-30 16:53:54,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-30 16:53:54,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-30 16:53:54,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-30 16:53:54,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-30 16:53:54,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 16:53:54,865 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 2, 1, 1, 1, 1] [2023-08-30 16:53:54,868 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:53:54,869 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:53:54,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:53:54 BasicIcfg [2023-08-30 16:53:54,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:53:54,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:53:54,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:53:54,872 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:53:54,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:53:32" (3/4) ... [2023-08-30 16:53:54,874 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:53:54,878 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 16:53:54,878 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 16:53:54,882 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-08-30 16:53:54,882 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-08-30 16:53:54,883 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 16:53:54,883 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:53:54,910 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:53:54,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:53:54,911 INFO L158 Benchmark]: Toolchain (without parser) took 23892.72ms. Allocated memory was 71.3MB in the beginning and 394.3MB in the end (delta: 323.0MB). Free memory was 47.3MB in the beginning and 230.4MB in the end (delta: -183.1MB). Peak memory consumption was 142.2MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,911 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:53:54,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 603.58ms. Allocated memory is still 71.3MB. Free memory was 47.1MB in the beginning and 38.9MB in the end (delta: 8.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,912 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.33ms. Allocated memory is still 71.3MB. Free memory was 38.9MB in the beginning and 35.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,912 INFO L158 Benchmark]: Boogie Preprocessor took 27.88ms. Allocated memory is still 71.3MB. Free memory was 35.9MB in the beginning and 33.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,913 INFO L158 Benchmark]: RCFGBuilder took 907.06ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 33.5MB in the beginning and 48.4MB in the end (delta: -14.9MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,913 INFO L158 Benchmark]: TraceAbstraction took 22261.81ms. Allocated memory was 88.1MB in the beginning and 394.3MB in the end (delta: 306.2MB). Free memory was 47.9MB in the beginning and 233.5MB in the end (delta: -185.6MB). Peak memory consumption was 120.6MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,913 INFO L158 Benchmark]: Witness Printer took 39.30ms. Allocated memory is still 394.3MB. Free memory was 232.5MB in the beginning and 230.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 603.58ms. Allocated memory is still 71.3MB. Free memory was 47.1MB in the beginning and 38.9MB in the end (delta: 8.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.33ms. Allocated memory is still 71.3MB. Free memory was 38.9MB in the beginning and 35.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.88ms. Allocated memory is still 71.3MB. Free memory was 35.9MB in the beginning and 33.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 907.06ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 33.5MB in the beginning and 48.4MB in the end (delta: -14.9MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 22261.81ms. Allocated memory was 88.1MB in the beginning and 394.3MB in the end (delta: 306.2MB). Free memory was 47.9MB in the beginning and 233.5MB in the end (delta: -185.6MB). Peak memory consumption was 120.6MB. Max. memory is 16.1GB. * Witness Printer took 39.30ms. Allocated memory is still 394.3MB. Free memory was 232.5MB in the beginning and 230.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 95 PlacesBefore, 26 PlacesAfterwards, 90 TransitionsBefore, 19 TransitionsAfterwards, 1244 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 3453 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1492, independent: 1333, independent conditional: 0, independent unconditional: 1333, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 682, independent: 644, independent conditional: 0, independent unconditional: 644, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1492, independent: 689, independent conditional: 0, independent unconditional: 689, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 682, unknown conditional: 0, unknown unconditional: 682] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 113 locations, 5 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: 22.1s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 853 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 671 mSDsluCounter, 950 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 861 mSDsCounter, 462 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2487 IncrementalHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 462 mSolverCounterUnsat, 89 mSDtfsCounter, 2487 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=917occurred in iteration=11, InterpolantAutomatonStates: 116, 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, 0.5s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 3111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:53:54,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE