./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/rfi003_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:16:43,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:16:43,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:16:43,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:16:43,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:16:43,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:16:43,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:16:43,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:16:43,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:16:43,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:16:43,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:16:43,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:16:43,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:16:43,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:16:43,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:16:43,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:16:43,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:16:43,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:16:43,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:16:43,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:16:43,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:16:43,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:16:43,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:16:43,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:16:43,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:16:43,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:16:43,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:16:43,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:16:43,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:16:43,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:16:43,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:16:43,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:16:43,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:16:43,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:16:43,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:16:43,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:16:43,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:16:43,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:16:43,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:16:43,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:16:43,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:16:43,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:16:43,552 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:16:43,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:16:43,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:16:43,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:16:43,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:16:43,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:16:43,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:16:43,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:16:43,555 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:16:43,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:16:43,556 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:16:43,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:16:43,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:16:43,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:16:43,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:16:43,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:16:43,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:16:43,557 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:16:43,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:16:43,558 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:16:43,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:16:43,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:16:43,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:16:43,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:16:43,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:16:43,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:16:43,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:16:43,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:16:43,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:16:43,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:16:43,560 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:16:43,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:16:43,560 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:16:43,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:16:43,561 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:16:43,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:16:43,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:16:43,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:16:43,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:16:43,848 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:16:43,848 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:16:43,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2023-08-30 23:16:44,930 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:16:45,161 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:16:45,162 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2023-08-30 23:16:45,178 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2a4a384/1ad34c011bfd449d96da3038c3b14b0b/FLAGb246564b4 [2023-08-30 23:16:45,191 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2a4a384/1ad34c011bfd449d96da3038c3b14b0b [2023-08-30 23:16:45,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:16:45,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:16:45,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:16:45,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:16:45,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:16:45,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6204eff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45, skipping insertion in model container [2023-08-30 23:16:45,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:16:45,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:16:45,367 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/rfi003_tso.i[944,957] [2023-08-30 23:16:45,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:16:45,602 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:16:45,611 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/rfi003_tso.i[944,957] [2023-08-30 23:16:45,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:16:45,706 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:16:45,706 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:16:45,712 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:16:45,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45 WrapperNode [2023-08-30 23:16:45,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:16:45,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:16:45,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:16:45,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:16:45,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,788 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 171 [2023-08-30 23:16:45,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:16:45,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:16:45,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:16:45,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:16:45,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,842 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:16:45,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:16:45,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:16:45,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:16:45,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (1/1) ... [2023-08-30 23:16:45,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:16:45,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:16:45,886 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 23:16:45,913 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 23:16:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:16:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:16:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:16:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:16:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:16:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:16:45,931 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:16:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:16:45,931 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:16:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:16:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:16:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:16:45,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:16:45,933 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 23:16:46,104 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:16:46,106 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:16:46,534 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:16:46,694 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:16:46,694 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:16:46,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:16:46 BoogieIcfgContainer [2023-08-30 23:16:46,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:16:46,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:16:46,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:16:46,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:16:46,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:16:45" (1/3) ... [2023-08-30 23:16:46,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6979cb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:16:46, skipping insertion in model container [2023-08-30 23:16:46,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:45" (2/3) ... [2023-08-30 23:16:46,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6979cb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:16:46, skipping insertion in model container [2023-08-30 23:16:46,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:16:46" (3/3) ... [2023-08-30 23:16:46,703 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2023-08-30 23:16:46,710 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:16:46,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:16:46,717 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 23:16:46,718 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:16:46,769 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:16:46,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 92 transitions, 194 flow [2023-08-30 23:16:46,895 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-08-30 23:16:46,896 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:16:46,901 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 50 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 23:16:46,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 92 transitions, 194 flow [2023-08-30 23:16:46,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 90 transitions, 186 flow [2023-08-30 23:16:46,909 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:16:46,927 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 90 transitions, 186 flow [2023-08-30 23:16:46,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 90 transitions, 186 flow [2023-08-30 23:16:46,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 90 transitions, 186 flow [2023-08-30 23:16:46,964 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-08-30 23:16:46,964 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:16:46,965 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 50 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 23:16:46,966 INFO L119 LiptonReduction]: Number of co-enabled transitions 1244 [2023-08-30 23:16:49,996 INFO L134 LiptonReduction]: Checked pairs total: 4348 [2023-08-30 23:16:49,996 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-08-30 23:16:50,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:16:50,014 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;@4f1966ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:16:50,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 23:16:50,019 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 23:16:50,019 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:16:50,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:50,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 23:16:50,020 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 23:16:50,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:50,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1568998742, now seen corresponding path program 1 times [2023-08-30 23:16:50,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:50,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144412616] [2023-08-30 23:16:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:50,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:50,428 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 23:16:50,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:50,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144412616] [2023-08-30 23:16:50,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144412616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:50,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:50,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:16:50,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585312337] [2023-08-30 23:16:50,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:50,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:16:50,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:50,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:16:50,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:16:50,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 169 [2023-08-30 23:16:50,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 52 flow. Second operand has 3 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 23:16:50,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:50,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 169 [2023-08-30 23:16:50,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:50,691 INFO L130 PetriNetUnfolder]: 380/639 cut-off events. [2023-08-30 23:16:50,691 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 23:16:50,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 639 events. 380/639 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2634 event pairs, 90 based on Foata normal form. 35/601 useless extension candidates. Maximal degree in co-relation 1281. Up to 466 conditions per place. [2023-08-30 23:16:50,700 INFO L137 encePairwiseOnDemand]: 165/169 looper letters, 24 selfloop transitions, 2 changer transitions 4/31 dead transitions. [2023-08-30 23:16:50,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 128 flow [2023-08-30 23:16:50,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:16:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:16:50,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-08-30 23:16:50,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207100591715976 [2023-08-30 23:16:50,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-08-30 23:16:50,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-08-30 23:16:50,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:50,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-08-30 23:16:50,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 23:16:50,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 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 23:16:50,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 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 23:16:50,737 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 52 flow. Second operand 3 states and 264 transitions. [2023-08-30 23:16:50,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 128 flow [2023-08-30 23:16:50,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:16:50,741 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 46 flow [2023-08-30 23:16:50,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-08-30 23:16:50,746 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-08-30 23:16:50,746 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 46 flow [2023-08-30 23:16:50,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 23:16:50,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:50,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:50,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:16:50,749 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 23:16:50,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:50,759 INFO L85 PathProgramCache]: Analyzing trace with hash 275037612, now seen corresponding path program 1 times [2023-08-30 23:16:50,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:50,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358693298] [2023-08-30 23:16:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:50,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:51,567 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 23:16:51,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:51,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358693298] [2023-08-30 23:16:51,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358693298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:51,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:51,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:51,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583501464] [2023-08-30 23:16:51,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:51,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:16:51,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:51,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:16:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:16:51,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 169 [2023-08-30 23:16:51,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 23:16:51,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:51,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 169 [2023-08-30 23:16:51,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:51,811 INFO L130 PetriNetUnfolder]: 305/534 cut-off events. [2023-08-30 23:16:51,811 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 23:16:51,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 534 events. 305/534 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2015 event pairs, 110 based on Foata normal form. 42/576 useless extension candidates. Maximal degree in co-relation 1100. Up to 305 conditions per place. [2023-08-30 23:16:51,814 INFO L137 encePairwiseOnDemand]: 165/169 looper letters, 24 selfloop transitions, 2 changer transitions 17/43 dead transitions. [2023-08-30 23:16:51,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 43 transitions, 182 flow [2023-08-30 23:16:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:16:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:16:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2023-08-30 23:16:51,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4378698224852071 [2023-08-30 23:16:51,817 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2023-08-30 23:16:51,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2023-08-30 23:16:51,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:51,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2023-08-30 23:16:51,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:51,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 23:16:51,821 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 23:16:51,821 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 46 flow. Second operand 5 states and 370 transitions. [2023-08-30 23:16:51,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 43 transitions, 182 flow [2023-08-30 23:16:51,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:16:51,823 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 54 flow [2023-08-30 23:16:51,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=54, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-08-30 23:16:51,824 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-30 23:16:51,824 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 54 flow [2023-08-30 23:16:51,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 23:16:51,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:51,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:51,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:16:51,825 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 23:16:51,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:51,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1915642280, now seen corresponding path program 1 times [2023-08-30 23:16:51,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:51,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390851433] [2023-08-30 23:16:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:51,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:52,579 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 23:16:52,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:52,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390851433] [2023-08-30 23:16:52,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390851433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:52,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:52,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:52,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125012573] [2023-08-30 23:16:52,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:52,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:16:52,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:52,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:16:52,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:16:52,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 169 [2023-08-30 23:16:52,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 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 23:16:52,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:52,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 169 [2023-08-30 23:16:52,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:52,798 INFO L130 PetriNetUnfolder]: 256/455 cut-off events. [2023-08-30 23:16:52,798 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-08-30 23:16:52,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 455 events. 256/455 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1630 event pairs, 125 based on Foata normal form. 24/479 useless extension candidates. Maximal degree in co-relation 1014. Up to 226 conditions per place. [2023-08-30 23:16:52,801 INFO L137 encePairwiseOnDemand]: 165/169 looper letters, 24 selfloop transitions, 2 changer transitions 14/40 dead transitions. [2023-08-30 23:16:52,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 178 flow [2023-08-30 23:16:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:16:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:16:52,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-08-30 23:16:52,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43431952662721895 [2023-08-30 23:16:52,803 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-08-30 23:16:52,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-08-30 23:16:52,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:52,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-08-30 23:16:52,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 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 23:16:52,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 23:16:52,806 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 23:16:52,806 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 54 flow. Second operand 5 states and 367 transitions. [2023-08-30 23:16:52,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 178 flow [2023-08-30 23:16:52,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 170 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 23:16:52,808 INFO L231 Difference]: Finished difference. Result has 32 places, 19 transitions, 58 flow [2023-08-30 23:16:52,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2023-08-30 23:16:52,809 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-08-30 23:16:52,809 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 19 transitions, 58 flow [2023-08-30 23:16:52,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 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 23:16:52,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:52,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:52,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:16:52,810 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 23:16:52,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:52,810 INFO L85 PathProgramCache]: Analyzing trace with hash -744690788, now seen corresponding path program 1 times [2023-08-30 23:16:52,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:52,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102015868] [2023-08-30 23:16:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:52,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:53,601 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 23:16:53,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:53,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102015868] [2023-08-30 23:16:53,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102015868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:53,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:53,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:16:53,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529738679] [2023-08-30 23:16:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:53,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:16:53,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:16:53,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:16:53,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 169 [2023-08-30 23:16:53,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 19 transitions, 58 flow. Second operand has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 23:16:53,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:53,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 169 [2023-08-30 23:16:53,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:53,834 INFO L130 PetriNetUnfolder]: 196/369 cut-off events. [2023-08-30 23:16:53,834 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-30 23:16:53,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 369 events. 196/369 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1399 event pairs, 80 based on Foata normal form. 15/384 useless extension candidates. Maximal degree in co-relation 833. Up to 307 conditions per place. [2023-08-30 23:16:53,836 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 27 selfloop transitions, 7 changer transitions 9/44 dead transitions. [2023-08-30 23:16:53,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 204 flow [2023-08-30 23:16:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:16:53,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:16:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2023-08-30 23:16:53,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44040574809805577 [2023-08-30 23:16:53,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2023-08-30 23:16:53,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2023-08-30 23:16:53,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:53,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2023-08-30 23:16:53,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 0 states have call successors, (0), 0 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 23:16:53,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 23:16:53,843 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 23:16:53,843 INFO L175 Difference]: Start difference. First operand has 32 places, 19 transitions, 58 flow. Second operand 7 states and 521 transitions. [2023-08-30 23:16:53,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 204 flow [2023-08-30 23:16:53,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 187 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 23:16:53,846 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 98 flow [2023-08-30 23:16:53,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=98, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-30 23:16:53,847 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-08-30 23:16:53,847 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 98 flow [2023-08-30 23:16:53,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 23:16:53,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:53,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:53,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:16:53,848 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 23:16:53,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1570032139, now seen corresponding path program 1 times [2023-08-30 23:16:53,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:53,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767382515] [2023-08-30 23:16:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:53,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:54,196 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 23:16:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767382515] [2023-08-30 23:16:54,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767382515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:54,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:54,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:54,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840933817] [2023-08-30 23:16:54,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:54,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:16:54,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:54,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:16:54,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:16:54,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 169 [2023-08-30 23:16:54,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:54,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:54,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 169 [2023-08-30 23:16:54,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:54,320 INFO L130 PetriNetUnfolder]: 111/231 cut-off events. [2023-08-30 23:16:54,320 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-08-30 23:16:54,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 231 events. 111/231 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 822 event pairs, 53 based on Foata normal form. 35/264 useless extension candidates. Maximal degree in co-relation 593. Up to 116 conditions per place. [2023-08-30 23:16:54,322 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 42 selfloop transitions, 4 changer transitions 1/48 dead transitions. [2023-08-30 23:16:54,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2023-08-30 23:16:54,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:16:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:16:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2023-08-30 23:16:54,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49556213017751477 [2023-08-30 23:16:54,324 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 335 transitions. [2023-08-30 23:16:54,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 335 transitions. [2023-08-30 23:16:54,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:54,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 335 transitions. [2023-08-30 23:16:54,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 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 23:16:54,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 0 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 23:16:54,327 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 0 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 23:16:54,327 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 98 flow. Second operand 4 states and 335 transitions. [2023-08-30 23:16:54,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2023-08-30 23:16:54,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 260 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 23:16:54,330 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 122 flow [2023-08-30 23:16:54,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-08-30 23:16:54,332 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-08-30 23:16:54,332 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 122 flow [2023-08-30 23:16:54,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:54,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:54,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:54,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:16:54,333 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 23:16:54,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:54,334 INFO L85 PathProgramCache]: Analyzing trace with hash 995260082, now seen corresponding path program 1 times [2023-08-30 23:16:54,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:54,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9721239] [2023-08-30 23:16:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:54,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:55,442 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 23:16:55,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:55,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9721239] [2023-08-30 23:16:55,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9721239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:55,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:55,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:16:55,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392705495] [2023-08-30 23:16:55,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:55,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:16:55,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:55,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:16:55,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:16:55,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 169 [2023-08-30 23:16:55,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 68.75) internal successors, (550), 8 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:55,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:55,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 169 [2023-08-30 23:16:55,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:55,639 INFO L130 PetriNetUnfolder]: 62/152 cut-off events. [2023-08-30 23:16:55,639 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-08-30 23:16:55,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 152 events. 62/152 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 471 event pairs, 36 based on Foata normal form. 5/157 useless extension candidates. Maximal degree in co-relation 464. Up to 131 conditions per place. [2023-08-30 23:16:55,640 INFO L137 encePairwiseOnDemand]: 163/169 looper letters, 26 selfloop transitions, 8 changer transitions 5/40 dead transitions. [2023-08-30 23:16:55,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 250 flow [2023-08-30 23:16:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:16:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:16:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 506 transitions. [2023-08-30 23:16:55,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42772612003381233 [2023-08-30 23:16:55,643 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 506 transitions. [2023-08-30 23:16:55,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 506 transitions. [2023-08-30 23:16:55,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:55,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 506 transitions. [2023-08-30 23:16:55,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 23:16:55,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 23:16:55,648 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 23:16:55,648 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 122 flow. Second operand 7 states and 506 transitions. [2023-08-30 23:16:55,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 250 flow [2023-08-30 23:16:55,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 238 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 23:16:55,651 INFO L231 Difference]: Finished difference. Result has 46 places, 29 transitions, 153 flow [2023-08-30 23:16:55,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=46, PETRI_TRANSITIONS=29} [2023-08-30 23:16:55,654 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-08-30 23:16:55,654 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 29 transitions, 153 flow [2023-08-30 23:16:55,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.75) internal successors, (550), 8 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:55,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:55,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:55,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:16:55,655 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 23:16:55,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:55,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2104896819, now seen corresponding path program 1 times [2023-08-30 23:16:55,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:55,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185585294] [2023-08-30 23:16:55,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:55,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:57,247 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 23:16:57,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:57,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185585294] [2023-08-30 23:16:57,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185585294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:57,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:57,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 23:16:57,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123898745] [2023-08-30 23:16:57,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:57,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 23:16:57,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:57,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 23:16:57,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-30 23:16:57,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 169 [2023-08-30 23:16:57,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 29 transitions, 153 flow. Second operand has 10 states, 10 states have (on average 68.5) internal successors, (685), 10 states have internal predecessors, (685), 0 states have call successors, (0), 0 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 23:16:57,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:57,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 169 [2023-08-30 23:16:57,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:57,586 INFO L130 PetriNetUnfolder]: 79/189 cut-off events. [2023-08-30 23:16:57,587 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-08-30 23:16:57,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 189 events. 79/189 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 688 event pairs, 26 based on Foata normal form. 5/193 useless extension candidates. Maximal degree in co-relation 591. Up to 106 conditions per place. [2023-08-30 23:16:57,588 INFO L137 encePairwiseOnDemand]: 160/169 looper letters, 31 selfloop transitions, 11 changer transitions 14/57 dead transitions. [2023-08-30 23:16:57,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 363 flow [2023-08-30 23:16:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:16:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:16:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 649 transitions. [2023-08-30 23:16:57,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266929651545036 [2023-08-30 23:16:57,590 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 649 transitions. [2023-08-30 23:16:57,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 649 transitions. [2023-08-30 23:16:57,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:57,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 649 transitions. [2023-08-30 23:16:57,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.11111111111111) internal successors, (649), 9 states have internal predecessors, (649), 0 states have call successors, (0), 0 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 23:16:57,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 0 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 23:16:57,595 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 0 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 23:16:57,595 INFO L175 Difference]: Start difference. First operand has 46 places, 29 transitions, 153 flow. Second operand 9 states and 649 transitions. [2023-08-30 23:16:57,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 363 flow [2023-08-30 23:16:57,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 349 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 23:16:57,597 INFO L231 Difference]: Finished difference. Result has 53 places, 36 transitions, 202 flow [2023-08-30 23:16:57,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2023-08-30 23:16:57,598 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2023-08-30 23:16:57,598 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 202 flow [2023-08-30 23:16:57,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.5) internal successors, (685), 10 states have internal predecessors, (685), 0 states have call successors, (0), 0 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 23:16:57,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:57,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:57,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:16:57,599 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 23:16:57,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash 783084069, now seen corresponding path program 2 times [2023-08-30 23:16:57,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:57,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024256779] [2023-08-30 23:16:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:57,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:57,924 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 23:16:57,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:57,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024256779] [2023-08-30 23:16:57,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024256779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:57,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:57,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:16:57,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870535802] [2023-08-30 23:16:57,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:57,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:16:57,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:57,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:16:57,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:16:57,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 169 [2023-08-30 23:16:57,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 36 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 23:16:57,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:57,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 169 [2023-08-30 23:16:57,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:58,027 INFO L130 PetriNetUnfolder]: 43/110 cut-off events. [2023-08-30 23:16:58,027 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-30 23:16:58,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 110 events. 43/110 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 322 event pairs, 13 based on Foata normal form. 11/120 useless extension candidates. Maximal degree in co-relation 377. Up to 59 conditions per place. [2023-08-30 23:16:58,028 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 39 selfloop transitions, 6 changer transitions 1/47 dead transitions. [2023-08-30 23:16:58,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 344 flow [2023-08-30 23:16:58,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:16:58,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:16:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 398 transitions. [2023-08-30 23:16:58,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710059171597633 [2023-08-30 23:16:58,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 398 transitions. [2023-08-30 23:16:58,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 398 transitions. [2023-08-30 23:16:58,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:58,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 398 transitions. [2023-08-30 23:16:58,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:58,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 23:16:58,042 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 23:16:58,042 INFO L175 Difference]: Start difference. First operand has 53 places, 36 transitions, 202 flow. Second operand 5 states and 398 transitions. [2023-08-30 23:16:58,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 344 flow [2023-08-30 23:16:58,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 312 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-30 23:16:58,044 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 197 flow [2023-08-30 23:16:58,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2023-08-30 23:16:58,045 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2023-08-30 23:16:58,045 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 197 flow [2023-08-30 23:16:58,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 23:16:58,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:58,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:58,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:16:58,047 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 23:16:58,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:58,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1536431698, now seen corresponding path program 1 times [2023-08-30 23:16:58,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:58,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426840794] [2023-08-30 23:16:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:58,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:17:00,621 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 23:17:00,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:17:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426840794] [2023-08-30 23:17:00,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426840794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:17:00,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:17:00,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 23:17:00,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342409173] [2023-08-30 23:17:00,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:17:00,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 23:17:00,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:17:00,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 23:17:00,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-30 23:17:00,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 169 [2023-08-30 23:17:00,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 197 flow. Second operand has 11 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:17:00,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:17:00,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 169 [2023-08-30 23:17:00,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:17:00,995 INFO L130 PetriNetUnfolder]: 43/123 cut-off events. [2023-08-30 23:17:00,995 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-30 23:17:00,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 123 events. 43/123 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 392 event pairs, 3 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 433. Up to 55 conditions per place. [2023-08-30 23:17:00,997 INFO L137 encePairwiseOnDemand]: 159/169 looper letters, 28 selfloop transitions, 20 changer transitions 10/59 dead transitions. [2023-08-30 23:17:00,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 435 flow [2023-08-30 23:17:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:17:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:17:01,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 624 transitions. [2023-08-30 23:17:01,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2023-08-30 23:17:01,012 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 624 transitions. [2023-08-30 23:17:01,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 624 transitions. [2023-08-30 23:17:01,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:17:01,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 624 transitions. [2023-08-30 23:17:01,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 69.33333333333333) internal successors, (624), 9 states have internal predecessors, (624), 0 states have call successors, (0), 0 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 23:17:01,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 0 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 23:17:01,016 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 0 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 23:17:01,016 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 197 flow. Second operand 9 states and 624 transitions. [2023-08-30 23:17:01,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 435 flow [2023-08-30 23:17:01,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 362 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-30 23:17:01,019 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 270 flow [2023-08-30 23:17:01,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=270, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-08-30 23:17:01,020 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-08-30 23:17:01,020 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 270 flow [2023-08-30 23:17:01,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:17:01,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:17:01,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:17:01,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 23:17:01,021 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 23:17:01,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:17:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash 152097626, now seen corresponding path program 2 times [2023-08-30 23:17:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:17:01,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810831806] [2023-08-30 23:17:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:17:01,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:17:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:17:01,286 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 23:17:01,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:17:01,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810831806] [2023-08-30 23:17:01,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810831806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:17:01,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:17:01,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:17:01,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909179181] [2023-08-30 23:17:01,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:17:01,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:17:01,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:17:01,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:17:01,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:17:01,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 169 [2023-08-30 23:17:01,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 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 23:17:01,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:17:01,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 169 [2023-08-30 23:17:01,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:17:01,390 INFO L130 PetriNetUnfolder]: 52/139 cut-off events. [2023-08-30 23:17:01,390 INFO L131 PetriNetUnfolder]: For 214/214 co-relation queries the response was YES. [2023-08-30 23:17:01,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 139 events. 52/139 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 454 event pairs, 9 based on Foata normal form. 1/140 useless extension candidates. Maximal degree in co-relation 530. Up to 68 conditions per place. [2023-08-30 23:17:01,391 INFO L137 encePairwiseOnDemand]: 165/169 looper letters, 26 selfloop transitions, 1 changer transitions 39/66 dead transitions. [2023-08-30 23:17:01,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 532 flow [2023-08-30 23:17:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:17:01,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:17:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 383 transitions. [2023-08-30 23:17:01,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532544378698225 [2023-08-30 23:17:01,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 383 transitions. [2023-08-30 23:17:01,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 383 transitions. [2023-08-30 23:17:01,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:17:01,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 383 transitions. [2023-08-30 23:17:01,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 23:17:01,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 23:17:01,397 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 23:17:01,397 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 270 flow. Second operand 5 states and 383 transitions. [2023-08-30 23:17:01,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 532 flow [2023-08-30 23:17:01,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 469 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-08-30 23:17:01,401 INFO L231 Difference]: Finished difference. Result has 58 places, 27 transitions, 129 flow [2023-08-30 23:17:01,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=129, PETRI_PLACES=58, PETRI_TRANSITIONS=27} [2023-08-30 23:17:01,402 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-08-30 23:17:01,402 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 27 transitions, 129 flow [2023-08-30 23:17:01,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 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 23:17:01,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:17:01,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:17:01,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 23:17:01,403 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 23:17:01,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:17:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash 319043860, now seen corresponding path program 3 times [2023-08-30 23:17:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:17:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847451515] [2023-08-30 23:17:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:17:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:17:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:17:02,941 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 23:17:02,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:17:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847451515] [2023-08-30 23:17:02,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847451515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:17:02,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:17:02,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 23:17:02,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168711552] [2023-08-30 23:17:02,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:17:02,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 23:17:02,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:17:02,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 23:17:02,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:17:03,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 169 [2023-08-30 23:17:03,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 27 transitions, 129 flow. Second operand has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 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 23:17:03,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:17:03,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 169 [2023-08-30 23:17:03,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:17:03,227 INFO L130 PetriNetUnfolder]: 15/65 cut-off events. [2023-08-30 23:17:03,227 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-30 23:17:03,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 65 events. 15/65 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 134 event pairs, 8 based on Foata normal form. 1/66 useless extension candidates. Maximal degree in co-relation 215. Up to 20 conditions per place. [2023-08-30 23:17:03,228 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 15 selfloop transitions, 5 changer transitions 15/36 dead transitions. [2023-08-30 23:17:03,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 36 transitions, 233 flow [2023-08-30 23:17:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:17:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:17:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 574 transitions. [2023-08-30 23:17:03,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4245562130177515 [2023-08-30 23:17:03,231 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 574 transitions. [2023-08-30 23:17:03,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 574 transitions. [2023-08-30 23:17:03,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:17:03,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 574 transitions. [2023-08-30 23:17:03,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 23:17:03,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 0 states have call successors, (0), 0 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 23:17:03,236 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 0 states have call successors, (0), 0 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 23:17:03,236 INFO L175 Difference]: Start difference. First operand has 58 places, 27 transitions, 129 flow. Second operand 8 states and 574 transitions. [2023-08-30 23:17:03,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 36 transitions, 233 flow [2023-08-30 23:17:03,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 201 flow, removed 9 selfloop flow, removed 13 redundant places. [2023-08-30 23:17:03,237 INFO L231 Difference]: Finished difference. Result has 46 places, 21 transitions, 94 flow [2023-08-30 23:17:03,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=21} [2023-08-30 23:17:03,238 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-08-30 23:17:03,238 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 21 transitions, 94 flow [2023-08-30 23:17:03,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 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 23:17:03,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:17:03,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:17:03,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 23:17:03,239 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 23:17:03,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:17:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -189233210, now seen corresponding path program 4 times [2023-08-30 23:17:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:17:03,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818990359] [2023-08-30 23:17:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:17:03,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:17:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:17:06,062 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 23:17:06,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:17:06,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818990359] [2023-08-30 23:17:06,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818990359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:17:06,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:17:06,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 23:17:06,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578982985] [2023-08-30 23:17:06,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:17:06,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 23:17:06,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:17:06,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 23:17:06,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-30 23:17:06,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 169 [2023-08-30 23:17:06,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 21 transitions, 94 flow. Second operand has 12 states, 12 states have (on average 64.5) internal successors, (774), 12 states have internal predecessors, (774), 0 states have call successors, (0), 0 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 23:17:06,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:17:06,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 169 [2023-08-30 23:17:06,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:17:06,670 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-30 23:17:06,670 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 23:17:06,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 40 events. 8/40 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 127. Up to 15 conditions per place. [2023-08-30 23:17:06,671 INFO L137 encePairwiseOnDemand]: 159/169 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-08-30 23:17:06,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 24 transitions, 149 flow [2023-08-30 23:17:06,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 23:17:06,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 23:17:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 652 transitions. [2023-08-30 23:17:06,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3857988165680473 [2023-08-30 23:17:06,673 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 652 transitions. [2023-08-30 23:17:06,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 652 transitions. [2023-08-30 23:17:06,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:17:06,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 652 transitions. [2023-08-30 23:17:06,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.2) internal successors, (652), 10 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 23:17:06,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 169.0) internal successors, (1859), 11 states have internal predecessors, (1859), 0 states have call successors, (0), 0 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 23:17:06,678 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 169.0) internal successors, (1859), 11 states have internal predecessors, (1859), 0 states have call successors, (0), 0 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 23:17:06,678 INFO L175 Difference]: Start difference. First operand has 46 places, 21 transitions, 94 flow. Second operand 10 states and 652 transitions. [2023-08-30 23:17:06,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 24 transitions, 149 flow [2023-08-30 23:17:06,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 24 transitions, 127 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-30 23:17:06,678 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-30 23:17:06,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-30 23:17:06,679 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-08-30 23:17:06,679 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-30 23:17:06,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.5) internal successors, (774), 12 states have internal predecessors, (774), 0 states have call successors, (0), 0 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 23:17:06,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-30 23:17:06,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-30 23:17:06,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-30 23:17:06,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-30 23:17:06,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-30 23:17:06,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 23:17:06,683 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 23:17:06,687 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:17:06,687 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:17:06,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:17:06 BasicIcfg [2023-08-30 23:17:06,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:17:06,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:17:06,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:17:06,690 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:17:06,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:16:46" (3/4) ... [2023-08-30 23:17:06,692 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 23:17:06,696 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 23:17:06,696 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 23:17:06,700 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-08-30 23:17:06,700 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-08-30 23:17:06,700 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 23:17:06,700 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 23:17:06,728 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:17:06,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:17:06,729 INFO L158 Benchmark]: Toolchain (without parser) took 21535.02ms. Allocated memory was 65.0MB in the beginning and 360.7MB in the end (delta: 295.7MB). Free memory was 33.8MB in the beginning and 310.5MB in the end (delta: -276.7MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2023-08-30 23:17:06,729 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 28.9MB in the beginning and 28.9MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:17:06,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.93ms. Allocated memory is still 65.0MB. Free memory was 33.6MB in the beginning and 39.6MB in the end (delta: -6.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 23:17:06,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.45ms. Allocated memory is still 65.0MB. Free memory was 39.6MB in the beginning and 36.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 23:17:06,729 INFO L158 Benchmark]: Boogie Preprocessor took 65.26ms. Allocated memory is still 65.0MB. Free memory was 36.3MB in the beginning and 34.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:17:06,730 INFO L158 Benchmark]: RCFGBuilder took 841.34ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 34.1MB in the beginning and 36.8MB in the end (delta: -2.6MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2023-08-30 23:17:06,730 INFO L158 Benchmark]: TraceAbstraction took 19991.37ms. Allocated memory was 79.7MB in the beginning and 360.7MB in the end (delta: 281.0MB). Free memory was 36.3MB in the beginning and 313.6MB in the end (delta: -277.3MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2023-08-30 23:17:06,730 INFO L158 Benchmark]: Witness Printer took 38.22ms. Allocated memory is still 360.7MB. Free memory was 313.6MB in the beginning and 310.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:17:06,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 28.9MB in the beginning and 28.9MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.93ms. Allocated memory is still 65.0MB. Free memory was 33.6MB in the beginning and 39.6MB in the end (delta: -6.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.45ms. Allocated memory is still 65.0MB. Free memory was 39.6MB in the beginning and 36.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.26ms. Allocated memory is still 65.0MB. Free memory was 36.3MB in the beginning and 34.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 841.34ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 34.1MB in the beginning and 36.8MB in the end (delta: -2.6MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * TraceAbstraction took 19991.37ms. Allocated memory was 79.7MB in the beginning and 360.7MB in the end (delta: 281.0MB). Free memory was 36.3MB in the beginning and 313.6MB in the end (delta: -277.3MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Witness Printer took 38.22ms. Allocated memory is still 360.7MB. Free memory was 313.6MB in the beginning and 310.5MB in the end (delta: 3.1MB). 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: 3.1s, 95 PlacesBefore, 29 PlacesAfterwards, 90 TransitionsBefore, 23 TransitionsAfterwards, 1244 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 77 TotalNumberOfCompositions, 4348 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1805, independent: 1601, independent conditional: 0, independent unconditional: 1601, dependent: 204, dependent conditional: 0, dependent unconditional: 204, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 681, independent: 652, independent conditional: 0, independent unconditional: 652, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1805, independent: 949, independent conditional: 0, independent unconditional: 949, dependent: 175, dependent conditional: 0, dependent unconditional: 175, unknown: 681, unknown conditional: 0, unknown unconditional: 681] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 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: 19.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 529 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 420 mSDsluCounter, 705 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 655 mSDsCounter, 169 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1957 IncrementalHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 169 mSolverCounterUnsat, 50 mSDtfsCounter, 1957 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=270occurred in iteration=9, InterpolantAutomatonStates: 77, 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, 0.6s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 3033 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 23:17:06,748 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