./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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 ../sv-benchmarks/c/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 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:10:15,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:10:15,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:10:15,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:10:15,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:10:15,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:10:15,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:10:15,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:10:15,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:10:15,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:10:15,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:10:15,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:10:15,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:10:15,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:10:15,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:10:15,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:10:15,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:10:15,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:10:15,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:10:16,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:10:16,004 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:10:16,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:10:16,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:10:16,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:10:16,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:10:16,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:10:16,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:10:16,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:10:16,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:10:16,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:10:16,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:10:16,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:10:16,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:10:16,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:10:16,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:10:16,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:10:16,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:10:16,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:10:16,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:10:16,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:10:16,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:10:16,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:10:16,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:10:16,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:10:16,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:10:16,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:10:16,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:10:16,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:10:16,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:10:16,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:10:16,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:10:16,058 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:10:16,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:10:16,059 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:10:16,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:10:16,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:10:16,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:10:16,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:10:16,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:10:16,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:10:16,060 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:10:16,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:10:16,061 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:10:16,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:10:16,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:10:16,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:10:16,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:10:16,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:10:16,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:10:16,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:10:16,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:10:16,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:10:16,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:10:16,063 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:10:16,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:10:16,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:10:16,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 [2022-07-19 21:10:16,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:10:16,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:10:16,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:10:16,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:10:16,279 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:10:16,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2022-07-19 21:10:16,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca775d9a1/f2f2f1e0c47c4ce7b99dfb6d8b54fbd6/FLAG50bdc3bc4 [2022-07-19 21:10:16,742 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:10:16,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2022-07-19 21:10:16,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca775d9a1/f2f2f1e0c47c4ce7b99dfb6d8b54fbd6/FLAG50bdc3bc4 [2022-07-19 21:10:17,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca775d9a1/f2f2f1e0c47c4ce7b99dfb6d8b54fbd6 [2022-07-19 21:10:17,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:10:17,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:10:17,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:10:17,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:10:17,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:10:17,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@909c378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17, skipping insertion in model container [2022-07-19 21:10:17,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:10:17,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:10:17,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2022-07-19 21:10:17,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:10:17,538 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:10:17,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2022-07-19 21:10:17,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:10:17,670 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:10:17,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17 WrapperNode [2022-07-19 21:10:17,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:10:17,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:10:17,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:10:17,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:10:17,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,768 INFO L137 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 465 [2022-07-19 21:10:17,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:10:17,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:10:17,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:10:17,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:10:17,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:10:17,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:10:17,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:10:17,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:10:17,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17" (1/1) ... [2022-07-19 21:10:17,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:10:17,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:10:17,873 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) [2022-07-19 21:10:17,876 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 [2022-07-19 21:10:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:10:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:10:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:10:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:10:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:10:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:10:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:10:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:10:17,915 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:10:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:10:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:10:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:10:17,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:10:17,917 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:10:18,079 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:10:18,081 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:10:18,736 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:10:19,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:10:19,290 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:10:19,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:10:19 BoogieIcfgContainer [2022-07-19 21:10:19,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:10:19,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:10:19,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:10:19,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:10:19,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:10:17" (1/3) ... [2022-07-19 21:10:19,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6624ab1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:10:19, skipping insertion in model container [2022-07-19 21:10:19,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:10:17" (2/3) ... [2022-07-19 21:10:19,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6624ab1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:10:19, skipping insertion in model container [2022-07-19 21:10:19,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:10:19" (3/3) ... [2022-07-19 21:10:19,300 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2022-07-19 21:10:19,308 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:10:19,316 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:10:19,317 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 21:10:19,317 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:10:19,396 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:10:19,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 99 transitions, 208 flow [2022-07-19 21:10:19,511 INFO L129 PetriNetUnfolder]: 2/97 cut-off events. [2022-07-19 21:10:19,512 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:10:19,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 97 events. 2/97 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. 0/93 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-07-19 21:10:19,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 99 transitions, 208 flow [2022-07-19 21:10:19,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 97 transitions, 200 flow [2022-07-19 21:10:19,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:10:19,541 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c388c1e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@d71ec3c [2022-07-19 21:10:19,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:10:19,562 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2022-07-19 21:10:19,563 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:10:19,564 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:19,564 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:19,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:10:19,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1861211899, now seen corresponding path program 1 times [2022-07-19 21:10:19,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:19,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481768503] [2022-07-19 21:10:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:19,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:19,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:19,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481768503] [2022-07-19 21:10:19,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481768503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:19,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:19,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:10:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550232573] [2022-07-19 21:10:19,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:19,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:10:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:10:19,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:10:19,976 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2022-07-19 21:10:19,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:19,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:19,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2022-07-19 21:10:19,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:20,142 INFO L129 PetriNetUnfolder]: 54/432 cut-off events. [2022-07-19 21:10:20,142 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:10:20,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 432 events. 54/432 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2384 event pairs, 24 based on Foata normal form. 21/424 useless extension candidates. Maximal degree in co-relation 498. Up to 85 conditions per place. [2022-07-19 21:10:20,147 INFO L132 encePairwiseOnDemand]: 94/99 looper letters, 13 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2022-07-19 21:10:20,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 230 flow [2022-07-19 21:10:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:10:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:10:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-07-19 21:10:20,161 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9158249158249159 [2022-07-19 21:10:20,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-07-19 21:10:20,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-07-19 21:10:20,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:20,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-07-19 21:10:20,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:20,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:20,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:20,179 INFO L186 Difference]: Start difference. First operand has 102 places, 97 transitions, 200 flow. Second operand 3 states and 272 transitions. [2022-07-19 21:10:20,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 230 flow [2022-07-19 21:10:20,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:10:20,186 INFO L242 Difference]: Finished difference. Result has 100 places, 93 transitions, 194 flow [2022-07-19 21:10:20,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2022-07-19 21:10:20,191 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, -2 predicate places. [2022-07-19 21:10:20,191 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 194 flow [2022-07-19 21:10:20,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:20,192 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:20,192 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:20,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:10:20,193 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)] === [2022-07-19 21:10:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1853642207, now seen corresponding path program 1 times [2022-07-19 21:10:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:20,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674877448] [2022-07-19 21:10:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:20,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:20,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:20,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674877448] [2022-07-19 21:10:20,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674877448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:20,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:20,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:10:20,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070947055] [2022-07-19 21:10:20,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:20,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:10:20,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:10:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:10:20,476 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 99 [2022-07-19 21:10:20,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:20,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:20,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 99 [2022-07-19 21:10:20,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:20,855 INFO L129 PetriNetUnfolder]: 178/617 cut-off events. [2022-07-19 21:10:20,855 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-07-19 21:10:20,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 617 events. 178/617 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3553 event pairs, 36 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 924. Up to 105 conditions per place. [2022-07-19 21:10:20,859 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 17 selfloop transitions, 2 changer transitions 43/129 dead transitions. [2022-07-19 21:10:20,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 129 transitions, 378 flow [2022-07-19 21:10:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:10:20,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:10:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 757 transitions. [2022-07-19 21:10:20,864 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8496071829405163 [2022-07-19 21:10:20,864 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 757 transitions. [2022-07-19 21:10:20,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 757 transitions. [2022-07-19 21:10:20,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:20,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 757 transitions. [2022-07-19 21:10:20,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.11111111111111) internal successors, (757), 9 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:20,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:20,871 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:20,871 INFO L186 Difference]: Start difference. First operand has 100 places, 93 transitions, 194 flow. Second operand 9 states and 757 transitions. [2022-07-19 21:10:20,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 129 transitions, 378 flow [2022-07-19 21:10:20,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 129 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:10:20,875 INFO L242 Difference]: Finished difference. Result has 113 places, 83 transitions, 190 flow [2022-07-19 21:10:20,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=113, PETRI_TRANSITIONS=83} [2022-07-19 21:10:20,876 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2022-07-19 21:10:20,876 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 83 transitions, 190 flow [2022-07-19 21:10:20,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:20,877 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:20,877 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:20,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:10:20,877 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)] === [2022-07-19 21:10:20,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1657408643, now seen corresponding path program 1 times [2022-07-19 21:10:20,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:20,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516278472] [2022-07-19 21:10:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:20,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:21,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:21,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516278472] [2022-07-19 21:10:21,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516278472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:21,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:21,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:10:21,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411010904] [2022-07-19 21:10:21,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:21,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:10:21,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:21,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:10:21,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:10:21,266 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 99 [2022-07-19 21:10:21,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 83 transitions, 190 flow. Second operand has 11 states, 11 states have (on average 73.63636363636364) internal successors, (810), 11 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:21,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:21,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 99 [2022-07-19 21:10:21,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:21,685 INFO L129 PetriNetUnfolder]: 119/358 cut-off events. [2022-07-19 21:10:21,685 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-07-19 21:10:21,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 358 events. 119/358 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1508 event pairs, 53 based on Foata normal form. 8/350 useless extension candidates. Maximal degree in co-relation 653. Up to 157 conditions per place. [2022-07-19 21:10:21,689 INFO L132 encePairwiseOnDemand]: 86/99 looper letters, 23 selfloop transitions, 12 changer transitions 25/121 dead transitions. [2022-07-19 21:10:21,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 121 transitions, 409 flow [2022-07-19 21:10:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:10:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:10:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1070 transitions. [2022-07-19 21:10:21,693 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.772005772005772 [2022-07-19 21:10:21,693 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1070 transitions. [2022-07-19 21:10:21,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1070 transitions. [2022-07-19 21:10:21,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:21,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1070 transitions. [2022-07-19 21:10:21,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 76.42857142857143) internal successors, (1070), 14 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:21,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:21,702 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:21,702 INFO L186 Difference]: Start difference. First operand has 113 places, 83 transitions, 190 flow. Second operand 14 states and 1070 transitions. [2022-07-19 21:10:21,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 121 transitions, 409 flow [2022-07-19 21:10:21,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 121 transitions, 375 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-19 21:10:21,712 INFO L242 Difference]: Finished difference. Result has 112 places, 91 transitions, 259 flow [2022-07-19 21:10:21,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=259, PETRI_PLACES=112, PETRI_TRANSITIONS=91} [2022-07-19 21:10:21,715 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2022-07-19 21:10:21,715 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 91 transitions, 259 flow [2022-07-19 21:10:21,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 73.63636363636364) internal successors, (810), 11 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:21,716 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:21,716 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:21,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:10:21,717 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)] === [2022-07-19 21:10:21,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:21,717 INFO L85 PathProgramCache]: Analyzing trace with hash 111180956, now seen corresponding path program 1 times [2022-07-19 21:10:21,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:21,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034556414] [2022-07-19 21:10:21,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:21,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:22,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034556414] [2022-07-19 21:10:22,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034556414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:22,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:22,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-19 21:10:22,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660119237] [2022-07-19 21:10:22,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:22,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 21:10:22,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:22,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 21:10:22,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:10:22,470 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2022-07-19 21:10:22,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 91 transitions, 259 flow. Second operand has 17 states, 17 states have (on average 65.47058823529412) internal successors, (1113), 17 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:22,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:22,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2022-07-19 21:10:22,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:23,971 INFO L129 PetriNetUnfolder]: 292/745 cut-off events. [2022-07-19 21:10:23,972 INFO L130 PetriNetUnfolder]: For 492/492 co-relation queries the response was YES. [2022-07-19 21:10:23,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 745 events. 292/745 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3978 event pairs, 81 based on Foata normal form. 10/736 useless extension candidates. Maximal degree in co-relation 1669. Up to 210 conditions per place. [2022-07-19 21:10:23,979 INFO L132 encePairwiseOnDemand]: 78/99 looper letters, 49 selfloop transitions, 38 changer transitions 47/187 dead transitions. [2022-07-19 21:10:23,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 187 transitions, 835 flow [2022-07-19 21:10:23,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:10:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:10:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1928 transitions. [2022-07-19 21:10:23,985 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6955266955266955 [2022-07-19 21:10:23,985 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1928 transitions. [2022-07-19 21:10:23,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1928 transitions. [2022-07-19 21:10:23,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:23,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1928 transitions. [2022-07-19 21:10:23,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 68.85714285714286) internal successors, (1928), 28 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:23,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 99.0) internal successors, (2871), 29 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:24,000 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 99.0) internal successors, (2871), 29 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:24,001 INFO L186 Difference]: Start difference. First operand has 112 places, 91 transitions, 259 flow. Second operand 28 states and 1928 transitions. [2022-07-19 21:10:24,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 187 transitions, 835 flow [2022-07-19 21:10:24,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 187 transitions, 803 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-07-19 21:10:24,011 INFO L242 Difference]: Finished difference. Result has 144 places, 119 transitions, 507 flow [2022-07-19 21:10:24,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=507, PETRI_PLACES=144, PETRI_TRANSITIONS=119} [2022-07-19 21:10:24,013 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 42 predicate places. [2022-07-19 21:10:24,013 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 119 transitions, 507 flow [2022-07-19 21:10:24,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 65.47058823529412) internal successors, (1113), 17 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:24,019 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:24,020 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:24,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:10:24,020 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)] === [2022-07-19 21:10:24,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:24,021 INFO L85 PathProgramCache]: Analyzing trace with hash -118443378, now seen corresponding path program 2 times [2022-07-19 21:10:24,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:24,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899639283] [2022-07-19 21:10:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:24,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:24,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:24,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899639283] [2022-07-19 21:10:24,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899639283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:24,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:24,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:10:24,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999371719] [2022-07-19 21:10:24,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:24,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:10:24,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:24,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:10:24,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:10:24,575 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-07-19 21:10:24,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 119 transitions, 507 flow. Second operand has 14 states, 14 states have (on average 70.57142857142857) internal successors, (988), 14 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:24,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:24,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-07-19 21:10:24,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:25,233 INFO L129 PetriNetUnfolder]: 145/440 cut-off events. [2022-07-19 21:10:25,234 INFO L130 PetriNetUnfolder]: For 1347/1613 co-relation queries the response was YES. [2022-07-19 21:10:25,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 440 events. 145/440 cut-off events. For 1347/1613 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2022 event pairs, 68 based on Foata normal form. 35/449 useless extension candidates. Maximal degree in co-relation 1494. Up to 209 conditions per place. [2022-07-19 21:10:25,239 INFO L132 encePairwiseOnDemand]: 83/99 looper letters, 57 selfloop transitions, 30 changer transitions 0/149 dead transitions. [2022-07-19 21:10:25,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 149 transitions, 934 flow [2022-07-19 21:10:25,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:10:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:10:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1299 transitions. [2022-07-19 21:10:25,243 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7289562289562289 [2022-07-19 21:10:25,243 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1299 transitions. [2022-07-19 21:10:25,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1299 transitions. [2022-07-19 21:10:25,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:25,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1299 transitions. [2022-07-19 21:10:25,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.16666666666667) internal successors, (1299), 18 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:25,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 99.0) internal successors, (1881), 19 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:25,251 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 99.0) internal successors, (1881), 19 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:25,251 INFO L186 Difference]: Start difference. First operand has 144 places, 119 transitions, 507 flow. Second operand 18 states and 1299 transitions. [2022-07-19 21:10:25,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 149 transitions, 934 flow [2022-07-19 21:10:25,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 149 transitions, 800 flow, removed 50 selfloop flow, removed 17 redundant places. [2022-07-19 21:10:25,260 INFO L242 Difference]: Finished difference. Result has 138 places, 137 transitions, 678 flow [2022-07-19 21:10:25,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=678, PETRI_PLACES=138, PETRI_TRANSITIONS=137} [2022-07-19 21:10:25,262 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 36 predicate places. [2022-07-19 21:10:25,262 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 137 transitions, 678 flow [2022-07-19 21:10:25,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 70.57142857142857) internal successors, (988), 14 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:25,262 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:25,263 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:25,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:10:25,263 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)] === [2022-07-19 21:10:25,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:25,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1437645764, now seen corresponding path program 1 times [2022-07-19 21:10:25,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:25,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597198990] [2022-07-19 21:10:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:25,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:25,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:25,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597198990] [2022-07-19 21:10:25,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597198990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:25,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:25,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:10:25,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928976728] [2022-07-19 21:10:25,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:25,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:10:25,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:25,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:10:25,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:10:25,450 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2022-07-19 21:10:25,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 137 transitions, 678 flow. Second operand has 10 states, 10 states have (on average 71.9) internal successors, (719), 10 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:25,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:25,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2022-07-19 21:10:25,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:26,119 INFO L129 PetriNetUnfolder]: 387/954 cut-off events. [2022-07-19 21:10:26,119 INFO L130 PetriNetUnfolder]: For 1185/1187 co-relation queries the response was YES. [2022-07-19 21:10:26,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2790 conditions, 954 events. 387/954 cut-off events. For 1185/1187 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5376 event pairs, 39 based on Foata normal form. 0/941 useless extension candidates. Maximal degree in co-relation 2724. Up to 191 conditions per place. [2022-07-19 21:10:26,126 INFO L132 encePairwiseOnDemand]: 86/99 looper letters, 45 selfloop transitions, 14 changer transitions 145/262 dead transitions. [2022-07-19 21:10:26,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 262 transitions, 1772 flow [2022-07-19 21:10:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:10:26,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:10:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1463 transitions. [2022-07-19 21:10:26,130 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2022-07-19 21:10:26,130 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1463 transitions. [2022-07-19 21:10:26,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1463 transitions. [2022-07-19 21:10:26,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:26,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1463 transitions. [2022-07-19 21:10:26,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 77.0) internal successors, (1463), 19 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:26,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:26,138 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:26,138 INFO L186 Difference]: Start difference. First operand has 138 places, 137 transitions, 678 flow. Second operand 19 states and 1463 transitions. [2022-07-19 21:10:26,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 262 transitions, 1772 flow [2022-07-19 21:10:26,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 262 transitions, 1624 flow, removed 28 selfloop flow, removed 17 redundant places. [2022-07-19 21:10:26,147 INFO L242 Difference]: Finished difference. Result has 154 places, 110 transitions, 488 flow [2022-07-19 21:10:26,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=488, PETRI_PLACES=154, PETRI_TRANSITIONS=110} [2022-07-19 21:10:26,150 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 52 predicate places. [2022-07-19 21:10:26,151 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 110 transitions, 488 flow [2022-07-19 21:10:26,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.9) internal successors, (719), 10 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:26,151 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:26,151 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:26,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:10:26,152 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)] === [2022-07-19 21:10:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:26,152 INFO L85 PathProgramCache]: Analyzing trace with hash -757960671, now seen corresponding path program 1 times [2022-07-19 21:10:26,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:26,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471758352] [2022-07-19 21:10:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:26,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:26,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:26,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471758352] [2022-07-19 21:10:26,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471758352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:26,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:26,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 21:10:26,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315545464] [2022-07-19 21:10:26,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:26,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 21:10:26,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:26,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 21:10:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:10:26,606 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-07-19 21:10:26,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 110 transitions, 488 flow. Second operand has 13 states, 13 states have (on average 70.76923076923077) internal successors, (920), 13 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:26,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:26,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-07-19 21:10:26,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:27,030 INFO L129 PetriNetUnfolder]: 65/301 cut-off events. [2022-07-19 21:10:27,031 INFO L130 PetriNetUnfolder]: For 959/979 co-relation queries the response was YES. [2022-07-19 21:10:27,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 301 events. 65/301 cut-off events. For 959/979 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1116 event pairs, 5 based on Foata normal form. 9/305 useless extension candidates. Maximal degree in co-relation 982. Up to 107 conditions per place. [2022-07-19 21:10:27,034 INFO L132 encePairwiseOnDemand]: 86/99 looper letters, 39 selfloop transitions, 21 changer transitions 13/135 dead transitions. [2022-07-19 21:10:27,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 135 transitions, 817 flow [2022-07-19 21:10:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:10:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:10:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1093 transitions. [2022-07-19 21:10:27,039 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.736026936026936 [2022-07-19 21:10:27,039 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1093 transitions. [2022-07-19 21:10:27,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1093 transitions. [2022-07-19 21:10:27,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:27,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1093 transitions. [2022-07-19 21:10:27,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 72.86666666666666) internal successors, (1093), 15 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:27,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:27,047 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:27,047 INFO L186 Difference]: Start difference. First operand has 154 places, 110 transitions, 488 flow. Second operand 15 states and 1093 transitions. [2022-07-19 21:10:27,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 135 transitions, 817 flow [2022-07-19 21:10:27,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 135 transitions, 752 flow, removed 23 selfloop flow, removed 15 redundant places. [2022-07-19 21:10:27,054 INFO L242 Difference]: Finished difference. Result has 144 places, 118 transitions, 594 flow [2022-07-19 21:10:27,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=594, PETRI_PLACES=144, PETRI_TRANSITIONS=118} [2022-07-19 21:10:27,055 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 42 predicate places. [2022-07-19 21:10:27,055 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 118 transitions, 594 flow [2022-07-19 21:10:27,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.76923076923077) internal successors, (920), 13 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:27,056 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:27,056 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:27,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:10:27,057 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)] === [2022-07-19 21:10:27,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:27,057 INFO L85 PathProgramCache]: Analyzing trace with hash -542719385, now seen corresponding path program 2 times [2022-07-19 21:10:27,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:27,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553230710] [2022-07-19 21:10:27,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:27,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:27,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:27,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553230710] [2022-07-19 21:10:27,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553230710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:27,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:27,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 21:10:27,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440498506] [2022-07-19 21:10:27,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:27,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 21:10:27,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:27,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 21:10:27,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:10:27,865 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2022-07-19 21:10:27,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 118 transitions, 594 flow. Second operand has 15 states, 15 states have (on average 68.66666666666667) internal successors, (1030), 15 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:27,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:27,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2022-07-19 21:10:27,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:28,387 INFO L129 PetriNetUnfolder]: 75/345 cut-off events. [2022-07-19 21:10:28,387 INFO L130 PetriNetUnfolder]: For 1342/1361 co-relation queries the response was YES. [2022-07-19 21:10:28,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 345 events. 75/345 cut-off events. For 1342/1361 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1428 event pairs, 10 based on Foata normal form. 9/349 useless extension candidates. Maximal degree in co-relation 1167. Up to 110 conditions per place. [2022-07-19 21:10:28,391 INFO L132 encePairwiseOnDemand]: 82/99 looper letters, 36 selfloop transitions, 33 changer transitions 13/142 dead transitions. [2022-07-19 21:10:28,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 142 transitions, 947 flow [2022-07-19 21:10:28,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:10:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:10:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1270 transitions. [2022-07-19 21:10:28,398 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.712682379349046 [2022-07-19 21:10:28,398 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1270 transitions. [2022-07-19 21:10:28,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1270 transitions. [2022-07-19 21:10:28,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:28,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1270 transitions. [2022-07-19 21:10:28,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 70.55555555555556) internal successors, (1270), 18 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:28,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 99.0) internal successors, (1881), 19 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:28,406 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 99.0) internal successors, (1881), 19 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:28,407 INFO L186 Difference]: Start difference. First operand has 144 places, 118 transitions, 594 flow. Second operand 18 states and 1270 transitions. [2022-07-19 21:10:28,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 142 transitions, 947 flow [2022-07-19 21:10:28,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 142 transitions, 885 flow, removed 29 selfloop flow, removed 8 redundant places. [2022-07-19 21:10:28,414 INFO L242 Difference]: Finished difference. Result has 155 places, 125 transitions, 728 flow [2022-07-19 21:10:28,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=728, PETRI_PLACES=155, PETRI_TRANSITIONS=125} [2022-07-19 21:10:28,415 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 53 predicate places. [2022-07-19 21:10:28,416 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 125 transitions, 728 flow [2022-07-19 21:10:28,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 68.66666666666667) internal successors, (1030), 15 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:28,416 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:28,417 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:28,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:10:28,417 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)] === [2022-07-19 21:10:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash 897393255, now seen corresponding path program 3 times [2022-07-19 21:10:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:28,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686877014] [2022-07-19 21:10:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:28,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:28,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:28,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686877014] [2022-07-19 21:10:28,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686877014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:28,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:28,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:10:28,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122597393] [2022-07-19 21:10:28,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:28,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:10:28,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:28,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:10:28,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:10:28,531 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 99 [2022-07-19 21:10:28,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 125 transitions, 728 flow. Second operand has 7 states, 7 states have (on average 77.28571428571429) internal successors, (541), 7 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:28,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:28,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 99 [2022-07-19 21:10:28,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:28,776 INFO L129 PetriNetUnfolder]: 86/308 cut-off events. [2022-07-19 21:10:28,776 INFO L130 PetriNetUnfolder]: For 1197/1199 co-relation queries the response was YES. [2022-07-19 21:10:28,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 308 events. 86/308 cut-off events. For 1197/1199 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1149 event pairs, 8 based on Foata normal form. 17/323 useless extension candidates. Maximal degree in co-relation 1189. Up to 55 conditions per place. [2022-07-19 21:10:28,779 INFO L132 encePairwiseOnDemand]: 91/99 looper letters, 53 selfloop transitions, 12 changer transitions 29/162 dead transitions. [2022-07-19 21:10:28,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 162 transitions, 1286 flow [2022-07-19 21:10:28,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:10:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:10:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 803 transitions. [2022-07-19 21:10:28,784 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2022-07-19 21:10:28,784 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 803 transitions. [2022-07-19 21:10:28,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 803 transitions. [2022-07-19 21:10:28,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:28,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 803 transitions. [2022-07-19 21:10:28,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.3) internal successors, (803), 10 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:28,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:28,788 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:28,789 INFO L186 Difference]: Start difference. First operand has 155 places, 125 transitions, 728 flow. Second operand 10 states and 803 transitions. [2022-07-19 21:10:28,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 162 transitions, 1286 flow [2022-07-19 21:10:28,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 162 transitions, 1056 flow, removed 81 selfloop flow, removed 25 redundant places. [2022-07-19 21:10:28,797 INFO L242 Difference]: Finished difference. Result has 139 places, 124 transitions, 633 flow [2022-07-19 21:10:28,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=633, PETRI_PLACES=139, PETRI_TRANSITIONS=124} [2022-07-19 21:10:28,798 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 37 predicate places. [2022-07-19 21:10:28,798 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 124 transitions, 633 flow [2022-07-19 21:10:28,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.28571428571429) internal successors, (541), 7 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:28,798 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:28,798 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:28,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:10:28,799 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)] === [2022-07-19 21:10:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:28,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1527059589, now seen corresponding path program 1 times [2022-07-19 21:10:28,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:28,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010447641] [2022-07-19 21:10:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:28,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:28,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:28,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010447641] [2022-07-19 21:10:28,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010447641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:28,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:28,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:10:28,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958120416] [2022-07-19 21:10:28,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:28,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:10:28,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:28,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:10:28,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:10:28,945 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 99 [2022-07-19 21:10:28,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 124 transitions, 633 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:28,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:28,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 99 [2022-07-19 21:10:28,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:29,141 INFO L129 PetriNetUnfolder]: 57/329 cut-off events. [2022-07-19 21:10:29,141 INFO L130 PetriNetUnfolder]: For 763/765 co-relation queries the response was YES. [2022-07-19 21:10:29,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 329 events. 57/329 cut-off events. For 763/765 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1518 event pairs, 3 based on Foata normal form. 3/327 useless extension candidates. Maximal degree in co-relation 1032. Up to 70 conditions per place. [2022-07-19 21:10:29,144 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 26 selfloop transitions, 1 changer transitions 47/144 dead transitions. [2022-07-19 21:10:29,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 144 transitions, 895 flow [2022-07-19 21:10:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:10:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:10:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 558 transitions. [2022-07-19 21:10:29,146 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8051948051948052 [2022-07-19 21:10:29,146 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 558 transitions. [2022-07-19 21:10:29,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 558 transitions. [2022-07-19 21:10:29,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:29,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 558 transitions. [2022-07-19 21:10:29,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:29,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:29,149 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:29,149 INFO L186 Difference]: Start difference. First operand has 139 places, 124 transitions, 633 flow. Second operand 7 states and 558 transitions. [2022-07-19 21:10:29,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 144 transitions, 895 flow [2022-07-19 21:10:29,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 144 transitions, 873 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-07-19 21:10:29,156 INFO L242 Difference]: Finished difference. Result has 142 places, 96 transitions, 384 flow [2022-07-19 21:10:29,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=142, PETRI_TRANSITIONS=96} [2022-07-19 21:10:29,157 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 40 predicate places. [2022-07-19 21:10:29,157 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 96 transitions, 384 flow [2022-07-19 21:10:29,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:29,157 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:29,158 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:29,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:10:29,158 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)] === [2022-07-19 21:10:29,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:29,159 INFO L85 PathProgramCache]: Analyzing trace with hash 122857867, now seen corresponding path program 2 times [2022-07-19 21:10:29,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:29,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016472325] [2022-07-19 21:10:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:29,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:29,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:29,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016472325] [2022-07-19 21:10:29,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016472325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:29,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:29,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:10:29,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560931297] [2022-07-19 21:10:29,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:29,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:10:29,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:10:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:10:29,716 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 99 [2022-07-19 21:10:29,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 96 transitions, 384 flow. Second operand has 18 states, 18 states have (on average 69.44444444444444) internal successors, (1250), 18 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:29,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:29,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 99 [2022-07-19 21:10:29,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:30,048 INFO L129 PetriNetUnfolder]: 13/206 cut-off events. [2022-07-19 21:10:30,048 INFO L130 PetriNetUnfolder]: For 288/293 co-relation queries the response was YES. [2022-07-19 21:10:30,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 206 events. 13/206 cut-off events. For 288/293 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 707 event pairs, 2 based on Foata normal form. 2/204 useless extension candidates. Maximal degree in co-relation 544. Up to 21 conditions per place. [2022-07-19 21:10:30,050 INFO L132 encePairwiseOnDemand]: 84/99 looper letters, 18 selfloop transitions, 16 changer transitions 10/105 dead transitions. [2022-07-19 21:10:30,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 105 transitions, 508 flow [2022-07-19 21:10:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:10:30,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:10:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1060 transitions. [2022-07-19 21:10:30,052 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7138047138047138 [2022-07-19 21:10:30,053 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1060 transitions. [2022-07-19 21:10:30,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1060 transitions. [2022-07-19 21:10:30,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:30,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1060 transitions. [2022-07-19 21:10:30,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 70.66666666666667) internal successors, (1060), 15 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:30,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:30,058 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:30,058 INFO L186 Difference]: Start difference. First operand has 142 places, 96 transitions, 384 flow. Second operand 15 states and 1060 transitions. [2022-07-19 21:10:30,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 105 transitions, 508 flow [2022-07-19 21:10:30,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 105 transitions, 441 flow, removed 18 selfloop flow, removed 17 redundant places. [2022-07-19 21:10:30,062 INFO L242 Difference]: Finished difference. Result has 129 places, 94 transitions, 359 flow [2022-07-19 21:10:30,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=359, PETRI_PLACES=129, PETRI_TRANSITIONS=94} [2022-07-19 21:10:30,063 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 27 predicate places. [2022-07-19 21:10:30,064 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 94 transitions, 359 flow [2022-07-19 21:10:30,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.44444444444444) internal successors, (1250), 18 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:30,064 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:30,065 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:10:30,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:10:30,065 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)] === [2022-07-19 21:10:30,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:30,066 INFO L85 PathProgramCache]: Analyzing trace with hash -464329885, now seen corresponding path program 3 times [2022-07-19 21:10:30,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:30,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393216374] [2022-07-19 21:10:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:30,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:30,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:30,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393216374] [2022-07-19 21:10:30,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393216374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:30,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:30,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 21:10:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572815043] [2022-07-19 21:10:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:30,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:10:30,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:10:30,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:10:30,653 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 99 [2022-07-19 21:10:30,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 94 transitions, 359 flow. Second operand has 18 states, 18 states have (on average 67.55555555555556) internal successors, (1216), 18 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:30,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:30,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 99 [2022-07-19 21:10:30,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:10:31,109 INFO L129 PetriNetUnfolder]: 8/147 cut-off events. [2022-07-19 21:10:31,109 INFO L130 PetriNetUnfolder]: For 158/161 co-relation queries the response was YES. [2022-07-19 21:10:31,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 147 events. 8/147 cut-off events. For 158/161 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 363 event pairs, 0 based on Foata normal form. 4/150 useless extension candidates. Maximal degree in co-relation 360. Up to 14 conditions per place. [2022-07-19 21:10:31,110 INFO L132 encePairwiseOnDemand]: 85/99 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2022-07-19 21:10:31,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 93 transitions, 427 flow [2022-07-19 21:10:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:10:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:10:31,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1022 transitions. [2022-07-19 21:10:31,115 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6882154882154882 [2022-07-19 21:10:31,115 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1022 transitions. [2022-07-19 21:10:31,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1022 transitions. [2022-07-19 21:10:31,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:10:31,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1022 transitions. [2022-07-19 21:10:31,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 68.13333333333334) internal successors, (1022), 15 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:31,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:31,120 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:31,120 INFO L186 Difference]: Start difference. First operand has 129 places, 94 transitions, 359 flow. Second operand 15 states and 1022 transitions. [2022-07-19 21:10:31,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 93 transitions, 427 flow [2022-07-19 21:10:31,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 93 transitions, 387 flow, removed 6 selfloop flow, removed 12 redundant places. [2022-07-19 21:10:31,122 INFO L242 Difference]: Finished difference. Result has 125 places, 0 transitions, 0 flow [2022-07-19 21:10:31,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=125, PETRI_TRANSITIONS=0} [2022-07-19 21:10:31,124 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 23 predicate places. [2022-07-19 21:10:31,125 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 0 transitions, 0 flow [2022-07-19 21:10:31,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.55555555555556) internal successors, (1216), 18 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:10:31,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-19 21:10:31,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-19 21:10:31,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-19 21:10:31,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-19 21:10:31,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-19 21:10:31,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:10:31,143 INFO L356 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1] [2022-07-19 21:10:31,147 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:10:31,147 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:10:31,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:10:31 BasicIcfg [2022-07-19 21:10:31,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:10:31,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:10:31,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:10:31,156 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:10:31,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:10:19" (3/4) ... [2022-07-19 21:10:31,159 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:10:31,164 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-19 21:10:31,164 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-19 21:10:31,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 117 nodes and edges [2022-07-19 21:10:31,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-07-19 21:10:31,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-07-19 21:10:31,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:10:31,238 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:10:31,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:10:31,239 INFO L158 Benchmark]: Toolchain (without parser) took 14134.30ms. Allocated memory was 94.4MB in the beginning and 257.9MB in the end (delta: 163.6MB). Free memory was 59.9MB in the beginning and 207.8MB in the end (delta: -147.8MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2022-07-19 21:10:31,241 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 94.4MB. Free memory was 66.0MB in the beginning and 65.9MB in the end (delta: 24.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:10:31,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.38ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 54.2MB in the end (delta: 5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 21:10:31,242 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.93ms. Allocated memory is still 94.4MB. Free memory was 54.2MB in the beginning and 50.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:10:31,242 INFO L158 Benchmark]: Boogie Preprocessor took 62.78ms. Allocated memory is still 94.4MB. Free memory was 50.2MB in the beginning and 47.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:10:31,243 INFO L158 Benchmark]: RCFGBuilder took 1457.37ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 47.3MB in the beginning and 51.8MB in the end (delta: -4.5MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2022-07-19 21:10:31,243 INFO L158 Benchmark]: TraceAbstraction took 11861.55ms. Allocated memory was 117.4MB in the beginning and 257.9MB in the end (delta: 140.5MB). Free memory was 51.5MB in the beginning and 213.0MB in the end (delta: -161.5MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. [2022-07-19 21:10:31,243 INFO L158 Benchmark]: Witness Printer took 82.22ms. Allocated memory is still 257.9MB. Free memory was 213.0MB in the beginning and 207.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:10:31,245 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 94.4MB. Free memory was 66.0MB in the beginning and 65.9MB in the end (delta: 24.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.38ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 54.2MB in the end (delta: 5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.93ms. Allocated memory is still 94.4MB. Free memory was 54.2MB in the beginning and 50.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.78ms. Allocated memory is still 94.4MB. Free memory was 50.2MB in the beginning and 47.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1457.37ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 47.3MB in the beginning and 51.8MB in the end (delta: -4.5MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. * TraceAbstraction took 11861.55ms. Allocated memory was 117.4MB in the beginning and 257.9MB in the end (delta: 140.5MB). Free memory was 51.5MB in the beginning and 213.0MB in the end (delta: -161.5MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. * Witness Printer took 82.22ms. Allocated memory is still 257.9MB. Free memory was 213.0MB in the beginning and 207.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 120 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: 11.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 611 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 611 mSDsluCounter, 822 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1094 mSDsCounter, 250 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2386 IncrementalHoareTripleChecker+Invalid, 2636 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 250 mSolverCounterUnsat, 143 mSDtfsCounter, 2386 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=728occurred in iteration=8, InterpolantAutomatonStates: 171, 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: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 856 NumberOfCodeBlocks, 856 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 844 ConstructedInterpolants, 0 QuantifiedInterpolants, 7373 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! [2022-07-19 21:10:31,294 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