./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe022_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe022_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 cfc87f4ca115dcc389a4b05cbc106fd8bac1a9e17a58d50108d65580024dc2f5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:11:44,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:11:44,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:11:44,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:11:44,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:11:44,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:11:44,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:11:44,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:11:44,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:11:44,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:11:44,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:11:44,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:11:44,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:11:44,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:11:44,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:11:44,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:11:44,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:11:44,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:11:44,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:11:44,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:11:44,965 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:11:44,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:11:44,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:11:44,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:11:44,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:11:44,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:11:44,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:11:44,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:11:44,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:11:44,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:11:44,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:11:44,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:11:44,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:11:44,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:11:44,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:11:44,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:11:44,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:11:44,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:11:44,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:11:44,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:11:44,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:11:44,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:11:44,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:11:45,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:11:45,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:11:45,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:11:45,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:11:45,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:11:45,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:11:45,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:11:45,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:11:45,015 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:11:45,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:11:45,015 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:11:45,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:11:45,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:11:45,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:11:45,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:11:45,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:11:45,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:11:45,016 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:11:45,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:11:45,016 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:11:45,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:11:45,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:11:45,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:11:45,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:11:45,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:45,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:11:45,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:11:45,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:11:45,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:11:45,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:11:45,018 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:11:45,018 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:11:45,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:11:45,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfc87f4ca115dcc389a4b05cbc106fd8bac1a9e17a58d50108d65580024dc2f5 [2022-07-19 21:11:45,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:11:45,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:11:45,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:11:45,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:11:45,229 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:11:45,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe022_tso.i [2022-07-19 21:11:45,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10fe285e3/fb09981159694c8db7fcb15eeb8ee5ab/FLAG56b8a0417 [2022-07-19 21:11:45,693 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:11:45,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe022_tso.i [2022-07-19 21:11:45,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10fe285e3/fb09981159694c8db7fcb15eeb8ee5ab/FLAG56b8a0417 [2022-07-19 21:11:46,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10fe285e3/fb09981159694c8db7fcb15eeb8ee5ab [2022-07-19 21:11:46,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:11:46,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:11:46,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:46,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:11:46,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:11:46,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@facbc5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46, skipping insertion in model container [2022-07-19 21:11:46,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:11:46,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:11:46,322 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/safe022_tso.i[945,958] [2022-07-19 21:11:46,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:46,558 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:11:46,582 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/safe022_tso.i[945,958] [2022-07-19 21:11:46,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:46,665 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:11:46,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46 WrapperNode [2022-07-19 21:11:46,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:46,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:46,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:11:46,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:11:46,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,745 INFO L137 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-07-19 21:11:46,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:46,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:11:46,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:11:46,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:11:46,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:11:46,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:11:46,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:11:46,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:11:46,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46" (1/1) ... [2022-07-19 21:11:46,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:46,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:11:46,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:11:46,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:11:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:11:46,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:11:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:11:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:11:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:11:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:11:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:11:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:11:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:11:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:11:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:11:46,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:11:46,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:11:46,887 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:11:46,956 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:11:46,960 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:11:47,116 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:11:47,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:11:47,122 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:11:47,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:47 BoogieIcfgContainer [2022-07-19 21:11:47,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:11:47,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:11:47,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:11:47,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:11:47,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:11:46" (1/3) ... [2022-07-19 21:11:47,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ece676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:47, skipping insertion in model container [2022-07-19 21:11:47,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:46" (2/3) ... [2022-07-19 21:11:47,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ece676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:47, skipping insertion in model container [2022-07-19 21:11:47,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:47" (3/3) ... [2022-07-19 21:11:47,131 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2022-07-19 21:11:47,135 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:11:47,141 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:11:47,141 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:11:47,141 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:11:47,170 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:11:47,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 75 transitions, 160 flow [2022-07-19 21:11:47,226 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2022-07-19 21:11:47,226 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:47,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2022-07-19 21:11:47,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 75 transitions, 160 flow [2022-07-19 21:11:47,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 61 transitions, 128 flow [2022-07-19 21:11:47,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:11:47,244 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@30c18820, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@26d61a29 [2022-07-19 21:11:47,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:11:47,254 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2022-07-19 21:11:47,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:47,255 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:47,255 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] [2022-07-19 21:11:47,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash 899280188, now seen corresponding path program 1 times [2022-07-19 21:11:47,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:47,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53286447] [2022-07-19 21:11:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:47,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:47,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:47,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53286447] [2022-07-19 21:11:47,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53286447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:47,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:47,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:47,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872086061] [2022-07-19 21:11:47,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:47,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:47,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:47,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:47,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:47,616 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2022-07-19 21:11:47,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:47,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:47,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2022-07-19 21:11:47,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:47,754 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2022-07-19 21:11:47,754 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:11:47,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 76 events. 3/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 4/79 useless extension candidates. Maximal degree in co-relation 72. Up to 7 conditions per place. [2022-07-19 21:11:47,757 INFO L132 encePairwiseOnDemand]: 68/75 looper letters, 8 selfloop transitions, 2 changer transitions 11/70 dead transitions. [2022-07-19 21:11:47,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 186 flow [2022-07-19 21:11:47,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:47,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 573 transitions. [2022-07-19 21:11:47,772 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2022-07-19 21:11:47,773 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 573 transitions. [2022-07-19 21:11:47,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 573 transitions. [2022-07-19 21:11:47,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:47,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 573 transitions. [2022-07-19 21:11:47,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.666666666666664) internal successors, (573), 9 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:47,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:47,791 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:47,792 INFO L186 Difference]: Start difference. First operand has 67 places, 61 transitions, 128 flow. Second operand 9 states and 573 transitions. [2022-07-19 21:11:47,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 186 flow [2022-07-19 21:11:47,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:11:47,802 INFO L242 Difference]: Finished difference. Result has 80 places, 59 transitions, 142 flow [2022-07-19 21:11:47,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2022-07-19 21:11:47,805 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2022-07-19 21:11:47,806 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 142 flow [2022-07-19 21:11:47,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:47,806 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:47,807 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] [2022-07-19 21:11:47,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:11:47,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:47,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:47,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2118032539, now seen corresponding path program 1 times [2022-07-19 21:11:47,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:47,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099554472] [2022-07-19 21:11:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:47,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:47,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099554472] [2022-07-19 21:11:47,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099554472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:47,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:47,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:47,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859871016] [2022-07-19 21:11:47,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:47,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:47,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:47,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:47,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:47,982 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 75 [2022-07-19 21:11:47,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:47,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:47,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 75 [2022-07-19 21:11:47,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:48,121 INFO L129 PetriNetUnfolder]: 5/87 cut-off events. [2022-07-19 21:11:48,121 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2022-07-19 21:11:48,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 87 events. 5/87 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 138. Up to 7 conditions per place. [2022-07-19 21:11:48,122 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 9 selfloop transitions, 4 changer transitions 12/72 dead transitions. [2022-07-19 21:11:48,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 72 transitions, 243 flow [2022-07-19 21:11:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:11:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:11:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 617 transitions. [2022-07-19 21:11:48,124 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8226666666666667 [2022-07-19 21:11:48,124 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 617 transitions. [2022-07-19 21:11:48,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 617 transitions. [2022-07-19 21:11:48,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:48,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 617 transitions. [2022-07-19 21:11:48,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.7) internal successors, (617), 10 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,127 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,128 INFO L186 Difference]: Start difference. First operand has 80 places, 59 transitions, 142 flow. Second operand 10 states and 617 transitions. [2022-07-19 21:11:48,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 72 transitions, 243 flow [2022-07-19 21:11:48,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 209 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-19 21:11:48,130 INFO L242 Difference]: Finished difference. Result has 82 places, 59 transitions, 156 flow [2022-07-19 21:11:48,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=156, PETRI_PLACES=82, PETRI_TRANSITIONS=59} [2022-07-19 21:11:48,130 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2022-07-19 21:11:48,131 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 59 transitions, 156 flow [2022-07-19 21:11:48,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,131 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:48,131 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] [2022-07-19 21:11:48,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:11:48,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:48,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:48,132 INFO L85 PathProgramCache]: Analyzing trace with hash -536850678, now seen corresponding path program 1 times [2022-07-19 21:11:48,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:48,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865498607] [2022-07-19 21:11:48,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:48,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:48,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:48,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865498607] [2022-07-19 21:11:48,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865498607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:48,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:48,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515864510] [2022-07-19 21:11:48,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:48,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:48,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:48,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:48,200 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 75 [2022-07-19 21:11:48,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 59 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:48,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 75 [2022-07-19 21:11:48,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:48,297 INFO L129 PetriNetUnfolder]: 25/148 cut-off events. [2022-07-19 21:11:48,297 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-19 21:11:48,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 148 events. 25/148 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 451 event pairs, 0 based on Foata normal form. 4/151 useless extension candidates. Maximal degree in co-relation 244. Up to 26 conditions per place. [2022-07-19 21:11:48,299 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 11 selfloop transitions, 5 changer transitions 15/79 dead transitions. [2022-07-19 21:11:48,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 260 flow [2022-07-19 21:11:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 573 transitions. [2022-07-19 21:11:48,301 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2022-07-19 21:11:48,301 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 573 transitions. [2022-07-19 21:11:48,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 573 transitions. [2022-07-19 21:11:48,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:48,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 573 transitions. [2022-07-19 21:11:48,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.666666666666664) internal successors, (573), 9 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,304 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,305 INFO L186 Difference]: Start difference. First operand has 82 places, 59 transitions, 156 flow. Second operand 9 states and 573 transitions. [2022-07-19 21:11:48,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 260 flow [2022-07-19 21:11:48,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 79 transitions, 234 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-07-19 21:11:48,308 INFO L242 Difference]: Finished difference. Result has 80 places, 61 transitions, 174 flow [2022-07-19 21:11:48,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2022-07-19 21:11:48,310 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2022-07-19 21:11:48,310 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 174 flow [2022-07-19 21:11:48,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,310 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:48,311 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] [2022-07-19 21:11:48,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:11:48,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1846199429, now seen corresponding path program 1 times [2022-07-19 21:11:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:48,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574419956] [2022-07-19 21:11:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:48,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:48,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:48,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574419956] [2022-07-19 21:11:48,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574419956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:48,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:48,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:48,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593378227] [2022-07-19 21:11:48,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:48,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:48,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:48,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:48,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:48,448 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 75 [2022-07-19 21:11:48,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:48,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 75 [2022-07-19 21:11:48,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:48,556 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2022-07-19 21:11:48,556 INFO L130 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-07-19 21:11:48,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 93 events. 9/93 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 0 based on Foata normal form. 3/96 useless extension candidates. Maximal degree in co-relation 187. Up to 18 conditions per place. [2022-07-19 21:11:48,557 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 7 selfloop transitions, 7 changer transitions 11/73 dead transitions. [2022-07-19 21:11:48,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 293 flow [2022-07-19 21:11:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:11:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:11:48,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 627 transitions. [2022-07-19 21:11:48,559 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.836 [2022-07-19 21:11:48,560 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 627 transitions. [2022-07-19 21:11:48,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 627 transitions. [2022-07-19 21:11:48,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:48,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 627 transitions. [2022-07-19 21:11:48,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.7) internal successors, (627), 10 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,565 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,566 INFO L186 Difference]: Start difference. First operand has 80 places, 61 transitions, 174 flow. Second operand 10 states and 627 transitions. [2022-07-19 21:11:48,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 293 flow [2022-07-19 21:11:48,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 254 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-07-19 21:11:48,569 INFO L242 Difference]: Finished difference. Result has 85 places, 61 transitions, 186 flow [2022-07-19 21:11:48,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=186, PETRI_PLACES=85, PETRI_TRANSITIONS=61} [2022-07-19 21:11:48,570 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2022-07-19 21:11:48,570 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 61 transitions, 186 flow [2022-07-19 21:11:48,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,572 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:48,572 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] [2022-07-19 21:11:48,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:11:48,572 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:11:48,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:48,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1132503556, now seen corresponding path program 1 times [2022-07-19 21:11:48,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:48,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863562876] [2022-07-19 21:11:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:48,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:48,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:48,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863562876] [2022-07-19 21:11:48,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863562876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:48,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:48,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:48,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751217137] [2022-07-19 21:11:48,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:48,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:48,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:48,664 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 75 [2022-07-19 21:11:48,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 61 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:48,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 75 [2022-07-19 21:11:48,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:48,743 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2022-07-19 21:11:48,743 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-19 21:11:48,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 67 events. 2/67 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 108. Up to 7 conditions per place. [2022-07-19 21:11:48,744 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2022-07-19 21:11:48,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 60 transitions, 214 flow [2022-07-19 21:11:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:11:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:11:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 471 transitions. [2022-07-19 21:11:48,746 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.785 [2022-07-19 21:11:48,746 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 471 transitions. [2022-07-19 21:11:48,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 471 transitions. [2022-07-19 21:11:48,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:48,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 471 transitions. [2022-07-19 21:11:48,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.875) internal successors, (471), 8 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,748 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,748 INFO L186 Difference]: Start difference. First operand has 85 places, 61 transitions, 186 flow. Second operand 8 states and 471 transitions. [2022-07-19 21:11:48,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 60 transitions, 214 flow [2022-07-19 21:11:48,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 168 flow, removed 13 selfloop flow, removed 13 redundant places. [2022-07-19 21:11:48,752 INFO L242 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2022-07-19 21:11:48,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=73, PETRI_TRANSITIONS=0} [2022-07-19 21:11:48,754 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2022-07-19 21:11:48,755 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2022-07-19 21:11:48,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:48,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-19 21:11:48,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-19 21:11:48,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-19 21:11:48,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:11:48,758 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-19 21:11:48,763 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:11:48,763 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:11:48,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:11:48 BasicIcfg [2022-07-19 21:11:48,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:11:48,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:11:48,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:11:48,772 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:11:48,773 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:47" (3/4) ... [2022-07-19 21:11:48,775 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:11:48,779 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-19 21:11:48,780 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-19 21:11:48,784 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-19 21:11:48,784 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:11:48,784 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:11:48,784 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:11:48,812 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:11:48,812 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:11:48,813 INFO L158 Benchmark]: Toolchain (without parser) took 2752.65ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 47.2MB in the beginning and 73.0MB in the end (delta: -25.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:11:48,814 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:11:48,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 619.08ms. Allocated memory is still 86.0MB. Free memory was 47.0MB in the beginning and 51.0MB in the end (delta: -4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:11:48,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.40ms. Allocated memory is still 86.0MB. Free memory was 51.0MB in the beginning and 49.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:11:48,815 INFO L158 Benchmark]: Boogie Preprocessor took 35.97ms. Allocated memory is still 86.0MB. Free memory was 48.9MB in the beginning and 47.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:11:48,815 INFO L158 Benchmark]: RCFGBuilder took 340.65ms. Allocated memory is still 86.0MB. Free memory was 47.7MB in the beginning and 61.1MB in the end (delta: -13.5MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2022-07-19 21:11:48,815 INFO L158 Benchmark]: TraceAbstraction took 1645.89ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 60.8MB in the beginning and 75.1MB in the end (delta: -14.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-07-19 21:11:48,815 INFO L158 Benchmark]: Witness Printer took 40.32ms. Allocated memory is still 104.9MB. Free memory was 75.1MB in the beginning and 73.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:48,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 619.08ms. Allocated memory is still 86.0MB. Free memory was 47.0MB in the beginning and 51.0MB in the end (delta: -4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.40ms. Allocated memory is still 86.0MB. Free memory was 51.0MB in the beginning and 49.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.97ms. Allocated memory is still 86.0MB. Free memory was 48.9MB in the beginning and 47.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 340.65ms. Allocated memory is still 86.0MB. Free memory was 47.7MB in the beginning and 61.1MB in the end (delta: -13.5MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1645.89ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 60.8MB in the beginning and 75.1MB in the end (delta: -14.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 40.32ms. Allocated memory is still 104.9MB. Free memory was 75.1MB in the beginning and 73.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 locations, 3 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: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 135 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 143 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 192 IncrementalHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 33 mSDtfsCounter, 192 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=4, InterpolantAutomatonStates: 46, 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 779 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2022-07-19 21:11:48,842 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