./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe021_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/safe021_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 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:50:00,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:50:00,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:50:00,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:50:00,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:50:00,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:50:00,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:50:00,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:50:00,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:50:00,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:50:00,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:50:00,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:50:00,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:50:00,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:50:00,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:50:00,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:50:00,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:50:00,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:50:00,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:50:00,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:50:00,979 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:50:00,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:50:00,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:50:00,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:50:00,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:50:00,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:50:00,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:50:00,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:50:00,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:50:00,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:50:00,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:50:00,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:50:00,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:50:00,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:50:00,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:50:00,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:50:00,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:50:00,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:50:00,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:50:00,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:50:00,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:50:00,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:50:00,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:50:01,021 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:50:01,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:50:01,022 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:50:01,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:50:01,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:50:01,023 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:50:01,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:50:01,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:50:01,024 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:50:01,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:50:01,025 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:50:01,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:50:01,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:50:01,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:50:01,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:50:01,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:50:01,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:50:01,025 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:50:01,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:50:01,027 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:50:01,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:50:01,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:50:01,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:50:01,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:50:01,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:50:01,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:50:01,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:50:01,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:50:01,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:50:01,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:50:01,029 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:50:01,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:50:01,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:50:01,029 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 [2022-07-13 21:50:01,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:50:01,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:50:01,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:50:01,237 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:50:01,237 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:50:01,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe021_tso.i [2022-07-13 21:50:01,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ffbbb8c/046ed706e3e14d3c923cb3fefacc0909/FLAG0c4e139a2 [2022-07-13 21:50:01,762 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:50:01,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe021_tso.i [2022-07-13 21:50:01,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ffbbb8c/046ed706e3e14d3c923cb3fefacc0909/FLAG0c4e139a2 [2022-07-13 21:50:02,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ffbbb8c/046ed706e3e14d3c923cb3fefacc0909 [2022-07-13 21:50:02,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:50:02,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:50:02,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:50:02,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:50:02,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:50:02,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a55cbb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02, skipping insertion in model container [2022-07-13 21:50:02,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:50:02,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:50:02,484 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/safe021_tso.i[945,958] [2022-07-13 21:50:02,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:50:02,641 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:50:02,650 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/safe021_tso.i[945,958] [2022-07-13 21:50:02,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:50:02,712 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:50:02,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02 WrapperNode [2022-07-13 21:50:02,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:50:02,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:50:02,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:50:02,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:50:02,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,760 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-07-13 21:50:02,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:50:02,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:50:02,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:50:02,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:50:02,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:50:02,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:50:02,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:50:02,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:50:02,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02" (1/1) ... [2022-07-13 21:50:02,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:50:02,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:50:02,827 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) [2022-07-13 21:50:02,868 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 [2022-07-13 21:50:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:50:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 21:50:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:50:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:50:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:50:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-13 21:50:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-13 21:50:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-13 21:50:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-13 21:50:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-13 21:50:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-13 21:50:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:50:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 21:50:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:50:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:50:02,910 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:50:03,038 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:50:03,040 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:50:03,178 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:50:03,184 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:50:03,184 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:50:03,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:03 BoogieIcfgContainer [2022-07-13 21:50:03,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:50:03,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:50:03,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:50:03,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:50:03,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:50:02" (1/3) ... [2022-07-13 21:50:03,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85b3398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:50:03, skipping insertion in model container [2022-07-13 21:50:03,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:02" (2/3) ... [2022-07-13 21:50:03,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85b3398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:50:03, skipping insertion in model container [2022-07-13 21:50:03,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:03" (3/3) ... [2022-07-13 21:50:03,192 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2022-07-13 21:50:03,195 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:50:03,201 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:50:03,201 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 21:50:03,201 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:50:03,230 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:50:03,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-07-13 21:50:03,306 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-07-13 21:50:03,306 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:50:03,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-13 21:50:03,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-07-13 21:50:03,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-07-13 21:50:03,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:50:03,323 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@4e7dc80b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@36cc010 [2022-07-13 21:50:03,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 21:50:03,334 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-07-13 21:50:03,335 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:50:03,335 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:03,335 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] [2022-07-13 21:50:03,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:03,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:03,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1402349347, now seen corresponding path program 1 times [2022-07-13 21:50:03,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:03,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852243271] [2022-07-13 21:50:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:03,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:03,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:03,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852243271] [2022-07-13 21:50:03,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852243271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:03,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:03,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005265683] [2022-07-13 21:50:03,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:03,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:03,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:03,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:03,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:03,788 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-07-13 21:50:03,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:03,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:03,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-07-13 21:50:03,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:04,069 INFO L129 PetriNetUnfolder]: 199/635 cut-off events. [2022-07-13 21:50:04,070 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-13 21:50:04,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 635 events. 199/635 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3772 event pairs, 34 based on Foata normal form. 22/636 useless extension candidates. Maximal degree in co-relation 989. Up to 151 conditions per place. [2022-07-13 21:50:04,078 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 18 selfloop transitions, 7 changer transitions 31/114 dead transitions. [2022-07-13 21:50:04,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 114 transitions, 352 flow [2022-07-13 21:50:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:50:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:50:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 708 transitions. [2022-07-13 21:50:04,093 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.855072463768116 [2022-07-13 21:50:04,094 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 708 transitions. [2022-07-13 21:50:04,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 708 transitions. [2022-07-13 21:50:04,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:04,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 708 transitions. [2022-07-13 21:50:04,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.66666666666667) internal successors, (708), 9 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 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) [2022-07-13 21:50:04,110 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 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) [2022-07-13 21:50:04,111 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 708 transitions. [2022-07-13 21:50:04,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 114 transitions, 352 flow [2022-07-13 21:50:04,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 114 transitions, 348 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 21:50:04,117 INFO L242 Difference]: Finished difference. Result has 97 places, 78 transitions, 236 flow [2022-07-13 21:50:04,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=97, PETRI_TRANSITIONS=78} [2022-07-13 21:50:04,123 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2022-07-13 21:50:04,123 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 78 transitions, 236 flow [2022-07-13 21:50:04,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,124 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:04,124 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] [2022-07-13 21:50:04,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:50:04,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:04,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:04,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1391425404, now seen corresponding path program 1 times [2022-07-13 21:50:04,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:04,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766777439] [2022-07-13 21:50:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:04,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:04,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:04,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766777439] [2022-07-13 21:50:04,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766777439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:04,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:04,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:04,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935360199] [2022-07-13 21:50:04,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:04,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:04,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:04,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:04,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:04,272 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2022-07-13 21:50:04,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:04,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2022-07-13 21:50:04,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:04,419 INFO L129 PetriNetUnfolder]: 62/329 cut-off events. [2022-07-13 21:50:04,419 INFO L130 PetriNetUnfolder]: For 414/464 co-relation queries the response was YES. [2022-07-13 21:50:04,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 329 events. 62/329 cut-off events. For 414/464 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1688 event pairs, 20 based on Foata normal form. 13/321 useless extension candidates. Maximal degree in co-relation 765. Up to 88 conditions per place. [2022-07-13 21:50:04,422 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 9 selfloop transitions, 3 changer transitions 13/91 dead transitions. [2022-07-13 21:50:04,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 366 flow [2022-07-13 21:50:04,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:50:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:50:04,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 716 transitions. [2022-07-13 21:50:04,425 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2022-07-13 21:50:04,425 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 716 transitions. [2022-07-13 21:50:04,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 716 transitions. [2022-07-13 21:50:04,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:04,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 716 transitions. [2022-07-13 21:50:04,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 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) [2022-07-13 21:50:04,429 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 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) [2022-07-13 21:50:04,429 INFO L186 Difference]: Start difference. First operand has 97 places, 78 transitions, 236 flow. Second operand 9 states and 716 transitions. [2022-07-13 21:50:04,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 366 flow [2022-07-13 21:50:04,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 91 transitions, 324 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-07-13 21:50:04,437 INFO L242 Difference]: Finished difference. Result has 104 places, 78 transitions, 237 flow [2022-07-13 21:50:04,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=237, PETRI_PLACES=104, PETRI_TRANSITIONS=78} [2022-07-13 21:50:04,438 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2022-07-13 21:50:04,439 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 78 transitions, 237 flow [2022-07-13 21:50:04,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,439 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:04,439 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] [2022-07-13 21:50:04,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:50:04,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:04,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2084116356, now seen corresponding path program 1 times [2022-07-13 21:50:04,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:04,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370333071] [2022-07-13 21:50:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:04,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:04,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:04,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370333071] [2022-07-13 21:50:04,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370333071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:04,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:04,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:04,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371250464] [2022-07-13 21:50:04,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:04,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:04,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:04,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:04,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:04,543 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2022-07-13 21:50:04,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 78 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:04,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2022-07-13 21:50:04,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:04,651 INFO L129 PetriNetUnfolder]: 84/386 cut-off events. [2022-07-13 21:50:04,652 INFO L130 PetriNetUnfolder]: For 615/741 co-relation queries the response was YES. [2022-07-13 21:50:04,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 386 events. 84/386 cut-off events. For 615/741 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2157 event pairs, 29 based on Foata normal form. 12/376 useless extension candidates. Maximal degree in co-relation 962. Up to 86 conditions per place. [2022-07-13 21:50:04,655 INFO L132 encePairwiseOnDemand]: 85/92 looper letters, 14 selfloop transitions, 5 changer transitions 22/105 dead transitions. [2022-07-13 21:50:04,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 483 flow [2022-07-13 21:50:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:50:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:50:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 721 transitions. [2022-07-13 21:50:04,657 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8707729468599034 [2022-07-13 21:50:04,657 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 721 transitions. [2022-07-13 21:50:04,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 721 transitions. [2022-07-13 21:50:04,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:04,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 721 transitions. [2022-07-13 21:50:04,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 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) [2022-07-13 21:50:04,660 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 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) [2022-07-13 21:50:04,661 INFO L186 Difference]: Start difference. First operand has 104 places, 78 transitions, 237 flow. Second operand 9 states and 721 transitions. [2022-07-13 21:50:04,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 483 flow [2022-07-13 21:50:04,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 105 transitions, 439 flow, removed 19 selfloop flow, removed 11 redundant places. [2022-07-13 21:50:04,664 INFO L242 Difference]: Finished difference. Result has 102 places, 81 transitions, 274 flow [2022-07-13 21:50:04,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=274, PETRI_PLACES=102, PETRI_TRANSITIONS=81} [2022-07-13 21:50:04,665 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 18 predicate places. [2022-07-13 21:50:04,665 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 81 transitions, 274 flow [2022-07-13 21:50:04,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,666 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:04,666 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] [2022-07-13 21:50:04,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:50:04,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:04,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash 744000701, now seen corresponding path program 1 times [2022-07-13 21:50:04,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:04,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296488035] [2022-07-13 21:50:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:04,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:04,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296488035] [2022-07-13 21:50:04,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296488035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:04,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:04,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:04,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863812655] [2022-07-13 21:50:04,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:04,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:04,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:04,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:04,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:04,745 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-13 21:50:04,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 81 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:04,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-13 21:50:04,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:04,870 INFO L129 PetriNetUnfolder]: 73/433 cut-off events. [2022-07-13 21:50:04,870 INFO L130 PetriNetUnfolder]: For 959/1178 co-relation queries the response was YES. [2022-07-13 21:50:04,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 433 events. 73/433 cut-off events. For 959/1178 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2587 event pairs, 37 based on Foata normal form. 16/417 useless extension candidates. Maximal degree in co-relation 1052. Up to 79 conditions per place. [2022-07-13 21:50:04,872 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 10 selfloop transitions, 5 changer transitions 16/95 dead transitions. [2022-07-13 21:50:04,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 95 transitions, 402 flow [2022-07-13 21:50:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:50:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:50:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-07-13 21:50:04,875 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8456521739130435 [2022-07-13 21:50:04,875 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-07-13 21:50:04,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-07-13 21:50:04,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:04,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-07-13 21:50:04,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,878 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,878 INFO L186 Difference]: Start difference. First operand has 102 places, 81 transitions, 274 flow. Second operand 10 states and 778 transitions. [2022-07-13 21:50:04,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 95 transitions, 402 flow [2022-07-13 21:50:04,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 95 transitions, 381 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-07-13 21:50:04,882 INFO L242 Difference]: Finished difference. Result has 109 places, 78 transitions, 260 flow [2022-07-13 21:50:04,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=260, PETRI_PLACES=109, PETRI_TRANSITIONS=78} [2022-07-13 21:50:04,883 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 25 predicate places. [2022-07-13 21:50:04,883 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 78 transitions, 260 flow [2022-07-13 21:50:04,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,884 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:04,884 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] [2022-07-13 21:50:04,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:50:04,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:04,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2076983639, now seen corresponding path program 1 times [2022-07-13 21:50:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:04,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972175568] [2022-07-13 21:50:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:04,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:04,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:04,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972175568] [2022-07-13 21:50:04,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972175568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:04,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:04,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:04,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679128440] [2022-07-13 21:50:04,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:04,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:04,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:04,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:04,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:04,945 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-13 21:50:04,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 78 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:04,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:04,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-13 21:50:04,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:05,106 INFO L129 PetriNetUnfolder]: 336/898 cut-off events. [2022-07-13 21:50:05,106 INFO L130 PetriNetUnfolder]: For 761/791 co-relation queries the response was YES. [2022-07-13 21:50:05,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 898 events. 336/898 cut-off events. For 761/791 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6178 event pairs, 32 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 1915. Up to 231 conditions per place. [2022-07-13 21:50:05,112 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 15 changer transitions 5/110 dead transitions. [2022-07-13 21:50:05,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 110 transitions, 420 flow [2022-07-13 21:50:05,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:50:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:50:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-07-13 21:50:05,114 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-07-13 21:50:05,114 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-07-13 21:50:05,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-07-13 21:50:05,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:05,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-07-13 21:50:05,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,118 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,118 INFO L186 Difference]: Start difference. First operand has 109 places, 78 transitions, 260 flow. Second operand 10 states and 798 transitions. [2022-07-13 21:50:05,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 110 transitions, 420 flow [2022-07-13 21:50:05,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 110 transitions, 386 flow, removed 11 selfloop flow, removed 10 redundant places. [2022-07-13 21:50:05,121 INFO L242 Difference]: Finished difference. Result has 108 places, 91 transitions, 335 flow [2022-07-13 21:50:05,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=335, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2022-07-13 21:50:05,122 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 24 predicate places. [2022-07-13 21:50:05,122 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 335 flow [2022-07-13 21:50:05,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,123 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:05,123 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] [2022-07-13 21:50:05,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:50:05,123 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:05,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1705812994, now seen corresponding path program 1 times [2022-07-13 21:50:05,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:05,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015978671] [2022-07-13 21:50:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:05,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:05,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:05,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015978671] [2022-07-13 21:50:05,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015978671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:05,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:05,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:05,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924882633] [2022-07-13 21:50:05,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:05,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:05,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:05,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:05,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:05,187 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-13 21:50:05,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:05,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-13 21:50:05,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:05,361 INFO L129 PetriNetUnfolder]: 296/847 cut-off events. [2022-07-13 21:50:05,361 INFO L130 PetriNetUnfolder]: For 1917/2050 co-relation queries the response was YES. [2022-07-13 21:50:05,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2808 conditions, 847 events. 296/847 cut-off events. For 1917/2050 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5885 event pairs, 7 based on Foata normal form. 55/858 useless extension candidates. Maximal degree in co-relation 2753. Up to 311 conditions per place. [2022-07-13 21:50:05,367 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 28 changer transitions 11/129 dead transitions. [2022-07-13 21:50:05,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 129 transitions, 701 flow [2022-07-13 21:50:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:50:05,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:50:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1036 transitions. [2022-07-13 21:50:05,369 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8662207357859532 [2022-07-13 21:50:05,369 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1036 transitions. [2022-07-13 21:50:05,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1036 transitions. [2022-07-13 21:50:05,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:05,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1036 transitions. [2022-07-13 21:50:05,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,373 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,373 INFO L186 Difference]: Start difference. First operand has 108 places, 91 transitions, 335 flow. Second operand 13 states and 1036 transitions. [2022-07-13 21:50:05,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 129 transitions, 701 flow [2022-07-13 21:50:05,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 129 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:50:05,379 INFO L242 Difference]: Finished difference. Result has 125 places, 108 transitions, 559 flow [2022-07-13 21:50:05,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=559, PETRI_PLACES=125, PETRI_TRANSITIONS=108} [2022-07-13 21:50:05,380 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 41 predicate places. [2022-07-13 21:50:05,380 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 108 transitions, 559 flow [2022-07-13 21:50:05,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,381 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:05,381 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] [2022-07-13 21:50:05,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:50:05,381 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:05,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:05,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1489407803, now seen corresponding path program 1 times [2022-07-13 21:50:05,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:05,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831197620] [2022-07-13 21:50:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:05,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:05,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831197620] [2022-07-13 21:50:05,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831197620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:05,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:05,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:50:05,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460206838] [2022-07-13 21:50:05,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:05,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:50:05,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:05,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:50:05,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:50:05,484 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-13 21:50:05,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 108 transitions, 559 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:05,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-13 21:50:05,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:05,698 INFO L129 PetriNetUnfolder]: 207/674 cut-off events. [2022-07-13 21:50:05,698 INFO L130 PetriNetUnfolder]: For 3179/3556 co-relation queries the response was YES. [2022-07-13 21:50:05,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 674 events. 207/674 cut-off events. For 3179/3556 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4868 event pairs, 0 based on Foata normal form. 72/699 useless extension candidates. Maximal degree in co-relation 2829. Up to 231 conditions per place. [2022-07-13 21:50:05,703 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 22 selfloop transitions, 32 changer transitions 19/137 dead transitions. [2022-07-13 21:50:05,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 137 transitions, 899 flow [2022-07-13 21:50:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:50:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 21:50:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1258 transitions. [2022-07-13 21:50:05,706 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8546195652173914 [2022-07-13 21:50:05,706 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1258 transitions. [2022-07-13 21:50:05,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1258 transitions. [2022-07-13 21:50:05,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:05,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1258 transitions. [2022-07-13 21:50:05,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.625) internal successors, (1258), 16 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,711 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,711 INFO L186 Difference]: Start difference. First operand has 125 places, 108 transitions, 559 flow. Second operand 16 states and 1258 transitions. [2022-07-13 21:50:05,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 137 transitions, 899 flow [2022-07-13 21:50:05,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 137 transitions, 802 flow, removed 40 selfloop flow, removed 11 redundant places. [2022-07-13 21:50:05,724 INFO L242 Difference]: Finished difference. Result has 136 places, 109 transitions, 576 flow [2022-07-13 21:50:05,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=576, PETRI_PLACES=136, PETRI_TRANSITIONS=109} [2022-07-13 21:50:05,725 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 52 predicate places. [2022-07-13 21:50:05,725 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 109 transitions, 576 flow [2022-07-13 21:50:05,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,726 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:05,726 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] [2022-07-13 21:50:05,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:50:05,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:05,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1680899949, now seen corresponding path program 1 times [2022-07-13 21:50:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:05,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56788442] [2022-07-13 21:50:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:05,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:05,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:05,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56788442] [2022-07-13 21:50:05,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56788442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:05,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:05,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532391177] [2022-07-13 21:50:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:05,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:05,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:05,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:05,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:05,812 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-13 21:50:05,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 109 transitions, 576 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:05,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-13 21:50:05,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:05,947 INFO L129 PetriNetUnfolder]: 135/701 cut-off events. [2022-07-13 21:50:05,947 INFO L130 PetriNetUnfolder]: For 2057/2115 co-relation queries the response was YES. [2022-07-13 21:50:05,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 701 events. 135/701 cut-off events. For 2057/2115 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5763 event pairs, 0 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 2222. Up to 103 conditions per place. [2022-07-13 21:50:05,951 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 0 selfloop transitions, 0 changer transitions 110/110 dead transitions. [2022-07-13 21:50:05,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 110 transitions, 616 flow [2022-07-13 21:50:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:50:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 21:50:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 541 transitions. [2022-07-13 21:50:05,952 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8400621118012422 [2022-07-13 21:50:05,952 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 541 transitions. [2022-07-13 21:50:05,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 541 transitions. [2022-07-13 21:50:05,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:05,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 541 transitions. [2022-07-13 21:50:05,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 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) [2022-07-13 21:50:05,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,956 INFO L186 Difference]: Start difference. First operand has 136 places, 109 transitions, 576 flow. Second operand 7 states and 541 transitions. [2022-07-13 21:50:05,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 110 transitions, 616 flow [2022-07-13 21:50:05,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 110 transitions, 519 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-07-13 21:50:05,966 INFO L242 Difference]: Finished difference. Result has 122 places, 0 transitions, 0 flow [2022-07-13 21:50:05,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=122, PETRI_TRANSITIONS=0} [2022-07-13 21:50:05,971 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 38 predicate places. [2022-07-13 21:50:05,971 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 0 transitions, 0 flow [2022-07-13 21:50:05,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:05,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-13 21:50:05,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-13 21:50:05,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-13 21:50:05,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-13 21:50:05,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:50:05,974 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:50:05,976 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:50:05,976 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:50:05,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:50:05 BasicIcfg [2022-07-13 21:50:05,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:50:05,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:50:05,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:50:05,980 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:50:05,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:03" (3/4) ... [2022-07-13 21:50:05,982 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 21:50:05,986 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-13 21:50:05,986 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-13 21:50:05,987 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-13 21:50:05,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-13 21:50:05,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 21:50:05,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 21:50:05,990 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 21:50:06,008 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:50:06,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:50:06,008 INFO L158 Benchmark]: Toolchain (without parser) took 3736.12ms. Allocated memory was 123.7MB in the beginning and 182.5MB in the end (delta: 58.7MB). Free memory was 95.5MB in the beginning and 119.1MB in the end (delta: -23.6MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. [2022-07-13 21:50:06,009 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 88.1MB. Free memory was 45.6MB in the beginning and 45.6MB in the end (delta: 48.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:50:06,009 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.01ms. Allocated memory is still 123.7MB. Free memory was 95.2MB in the beginning and 90.1MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 21:50:06,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.23ms. Allocated memory is still 123.7MB. Free memory was 90.1MB in the beginning and 88.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:06,009 INFO L158 Benchmark]: Boogie Preprocessor took 36.41ms. Allocated memory is still 123.7MB. Free memory was 88.0MB in the beginning and 86.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:06,010 INFO L158 Benchmark]: RCFGBuilder took 387.71ms. Allocated memory is still 123.7MB. Free memory was 86.6MB in the beginning and 74.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 21:50:06,010 INFO L158 Benchmark]: TraceAbstraction took 2792.69ms. Allocated memory was 123.7MB in the beginning and 182.5MB in the end (delta: 58.7MB). Free memory was 73.7MB in the beginning and 122.2MB in the end (delta: -48.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-13 21:50:06,010 INFO L158 Benchmark]: Witness Printer took 27.98ms. Allocated memory is still 182.5MB. Free memory was 122.2MB in the beginning and 119.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:50:06,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 88.1MB. Free memory was 45.6MB in the beginning and 45.6MB in the end (delta: 48.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 429.01ms. Allocated memory is still 123.7MB. Free memory was 95.2MB in the beginning and 90.1MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.23ms. Allocated memory is still 123.7MB. Free memory was 90.1MB in the beginning and 88.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.41ms. Allocated memory is still 123.7MB. Free memory was 88.0MB in the beginning and 86.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 387.71ms. Allocated memory is still 123.7MB. Free memory was 86.6MB in the beginning and 74.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2792.69ms. Allocated memory was 123.7MB in the beginning and 182.5MB in the end (delta: 58.7MB). Free memory was 73.7MB in the beginning and 122.2MB in the end (delta: -48.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Witness Printer took 27.98ms. Allocated memory is still 182.5MB. Free memory was 122.2MB in the beginning and 119.1MB in the end (delta: 3.1MB). 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 261 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 295 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 319 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 436 IncrementalHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 75 mSDtfsCounter, 436 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=576occurred in iteration=7, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 471 ConstructedInterpolants, 0 QuantifiedInterpolants, 1685 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 21:50:06,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE