./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 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/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-?-f4b24e3 [2022-07-13 21:50:03,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:50:03,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:50:03,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:50:03,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:50:03,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:50:03,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:50:03,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:50:03,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:50:03,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:50:03,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:50:03,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:50:03,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:50:03,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:50:03,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:50:03,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:50:03,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:50:03,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:50:03,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:50:03,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:50:03,996 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:50:03,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:50:04,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:50:04,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:50:04,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:50:04,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:50:04,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:50:04,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:50:04,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:50:04,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:50:04,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:50:04,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:50:04,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:50:04,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:50:04,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:50:04,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:50:04,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:50:04,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:50:04,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:50:04,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:50:04,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:50:04,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:50:04,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:50:04,064 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:50:04,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:50:04,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:50:04,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:50:04,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:50:04,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:50:04,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:50:04,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:50:04,073 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:50:04,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:50:04,074 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:50:04,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:50:04,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:50:04,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:50:04,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:50:04,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:50:04,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:50:04,075 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:50:04,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:50:04,076 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:50:04,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:50:04,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:50:04,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:50:04,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:50:04,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:50:04,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:50:04,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:50:04,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:50:04,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:50:04,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:50:04,088 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:50:04,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:50:04,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:50:04,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfc87f4ca115dcc389a4b05cbc106fd8bac1a9e17a58d50108d65580024dc2f5 [2022-07-13 21:50:04,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:50:04,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:50:04,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:50:04,309 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:50:04,310 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:50:04,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe022_tso.i [2022-07-13 21:50:04,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80b0dd398/57515a0c5db74f0293c46e22789770a9/FLAG7635992d6 [2022-07-13 21:50:04,817 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:50:04,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe022_tso.i [2022-07-13 21:50:04,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80b0dd398/57515a0c5db74f0293c46e22789770a9/FLAG7635992d6 [2022-07-13 21:50:05,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80b0dd398/57515a0c5db74f0293c46e22789770a9 [2022-07-13 21:50:05,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:50:05,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:50:05,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:50:05,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:50:05,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:50:05,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ef672a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05, skipping insertion in model container [2022-07-13 21:50:05,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:50:05,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:50:05,579 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] [2022-07-13 21:50:05,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:50:05,747 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:50:05,760 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] [2022-07-13 21:50:05,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:50:05,849 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:50:05,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05 WrapperNode [2022-07-13 21:50:05,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:50:05,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:50:05,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:50:05,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:50:05,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,908 INFO L137 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-07-13 21:50:05,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:50:05,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:50:05,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:50:05,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:50:05,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:50:05,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:50:05,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:50:05,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:50:05,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05" (1/1) ... [2022-07-13 21:50:05,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:50:05,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:50:05,988 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 21:50:05,999 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 21:50:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:50:06,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 21:50:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:50:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:50:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:50:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-13 21:50:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-13 21:50:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-13 21:50:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-13 21:50:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:50:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 21:50:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:50:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:50:06,038 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 21:50:06,126 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:50:06,127 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:50:06,228 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:50:06,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:50:06,235 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:50:06,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:06 BoogieIcfgContainer [2022-07-13 21:50:06,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:50:06,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:50:06,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:50:06,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:50:06,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:50:05" (1/3) ... [2022-07-13 21:50:06,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492cb46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:50:06, skipping insertion in model container [2022-07-13 21:50:06,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:05" (2/3) ... [2022-07-13 21:50:06,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492cb46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:50:06, skipping insertion in model container [2022-07-13 21:50:06,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:06" (3/3) ... [2022-07-13 21:50:06,266 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2022-07-13 21:50:06,271 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:50:06,294 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:50:06,294 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 21:50:06,294 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:50:06,346 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:50:06,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 75 transitions, 160 flow [2022-07-13 21:50:06,422 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2022-07-13 21:50:06,422 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:50:06,433 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. [2022-07-13 21:50:06,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 75 transitions, 160 flow [2022-07-13 21:50:06,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 61 transitions, 128 flow [2022-07-13 21:50:06,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:50:06,465 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@7fae6509, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75f8983f [2022-07-13 21:50:06,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 21:50:06,485 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2022-07-13 21:50:06,485 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:50:06,486 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:06,486 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] [2022-07-13 21:50:06,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 21:50:06,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:06,492 INFO L85 PathProgramCache]: Analyzing trace with hash 899280188, now seen corresponding path program 1 times [2022-07-13 21:50:06,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:06,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878124245] [2022-07-13 21:50:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:06,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:06,854 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 21:50:06,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:06,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878124245] [2022-07-13 21:50:06,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878124245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:06,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:06,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:06,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27747923] [2022-07-13 21:50:06,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:06,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:06,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:06,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:06,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:06,891 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2022-07-13 21:50:06,894 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) [2022-07-13 21:50:06,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:06,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2022-07-13 21:50:06,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:07,040 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2022-07-13 21:50:07,042 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:50:07,043 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. [2022-07-13 21:50:07,044 INFO L132 encePairwiseOnDemand]: 68/75 looper letters, 8 selfloop transitions, 2 changer transitions 11/70 dead transitions. [2022-07-13 21:50:07,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 186 flow [2022-07-13 21:50:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:50:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:50:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 573 transitions. [2022-07-13 21:50:07,058 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2022-07-13 21:50:07,059 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 573 transitions. [2022-07-13 21:50:07,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 573 transitions. [2022-07-13 21:50:07,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:07,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 573 transitions. [2022-07-13 21:50:07,066 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) [2022-07-13 21:50:07,080 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) [2022-07-13 21:50:07,082 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) [2022-07-13 21:50:07,084 INFO L186 Difference]: Start difference. First operand has 67 places, 61 transitions, 128 flow. Second operand 9 states and 573 transitions. [2022-07-13 21:50:07,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 186 flow [2022-07-13 21:50:07,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:50:07,091 INFO L242 Difference]: Finished difference. Result has 80 places, 59 transitions, 142 flow [2022-07-13 21:50:07,093 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} [2022-07-13 21:50:07,097 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2022-07-13 21:50:07,099 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 142 flow [2022-07-13 21:50:07,100 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) [2022-07-13 21:50:07,100 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:07,101 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] [2022-07-13 21:50:07,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:50:07,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 21:50:07,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:07,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2118032539, now seen corresponding path program 1 times [2022-07-13 21:50:07,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:07,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612268258] [2022-07-13 21:50:07,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:07,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:07,245 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 21:50:07,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:07,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612268258] [2022-07-13 21:50:07,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612268258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:07,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:07,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:07,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359420237] [2022-07-13 21:50:07,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:07,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:07,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:07,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:07,250 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 75 [2022-07-13 21:50:07,251 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) [2022-07-13 21:50:07,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:07,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 75 [2022-07-13 21:50:07,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:07,412 INFO L129 PetriNetUnfolder]: 5/87 cut-off events. [2022-07-13 21:50:07,412 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2022-07-13 21:50:07,414 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. [2022-07-13 21:50:07,414 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 9 selfloop transitions, 4 changer transitions 12/72 dead transitions. [2022-07-13 21:50:07,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 72 transitions, 243 flow [2022-07-13 21:50:07,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:50:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:50:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 617 transitions. [2022-07-13 21:50:07,418 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8226666666666667 [2022-07-13 21:50:07,418 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 617 transitions. [2022-07-13 21:50:07,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 617 transitions. [2022-07-13 21:50:07,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:07,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 617 transitions. [2022-07-13 21:50:07,421 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) [2022-07-13 21:50:07,424 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) [2022-07-13 21:50:07,425 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) [2022-07-13 21:50:07,425 INFO L186 Difference]: Start difference. First operand has 80 places, 59 transitions, 142 flow. Second operand 10 states and 617 transitions. [2022-07-13 21:50:07,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 72 transitions, 243 flow [2022-07-13 21:50:07,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 209 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-13 21:50:07,431 INFO L242 Difference]: Finished difference. Result has 82 places, 59 transitions, 156 flow [2022-07-13 21:50:07,431 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} [2022-07-13 21:50:07,432 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2022-07-13 21:50:07,433 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 59 transitions, 156 flow [2022-07-13 21:50:07,433 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) [2022-07-13 21:50:07,433 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:07,434 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] [2022-07-13 21:50:07,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:50:07,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 21:50:07,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:07,436 INFO L85 PathProgramCache]: Analyzing trace with hash -536850678, now seen corresponding path program 1 times [2022-07-13 21:50:07,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:07,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558560480] [2022-07-13 21:50:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:07,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:07,599 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 21:50:07,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:07,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558560480] [2022-07-13 21:50:07,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558560480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:07,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:07,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:07,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805961804] [2022-07-13 21:50:07,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:07,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:07,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:07,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:07,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:07,607 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 75 [2022-07-13 21:50:07,607 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) [2022-07-13 21:50:07,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:07,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 75 [2022-07-13 21:50:07,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:07,739 INFO L129 PetriNetUnfolder]: 25/148 cut-off events. [2022-07-13 21:50:07,739 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-13 21:50:07,740 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. [2022-07-13 21:50:07,741 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 11 selfloop transitions, 5 changer transitions 15/79 dead transitions. [2022-07-13 21:50:07,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 260 flow [2022-07-13 21:50:07,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:50:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:50:07,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 573 transitions. [2022-07-13 21:50:07,744 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2022-07-13 21:50:07,744 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 573 transitions. [2022-07-13 21:50:07,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 573 transitions. [2022-07-13 21:50:07,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:07,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 573 transitions. [2022-07-13 21:50:07,748 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) [2022-07-13 21:50:07,750 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) [2022-07-13 21:50:07,750 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) [2022-07-13 21:50:07,750 INFO L186 Difference]: Start difference. First operand has 82 places, 59 transitions, 156 flow. Second operand 9 states and 573 transitions. [2022-07-13 21:50:07,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 260 flow [2022-07-13 21:50:07,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 79 transitions, 234 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-07-13 21:50:07,755 INFO L242 Difference]: Finished difference. Result has 80 places, 61 transitions, 174 flow [2022-07-13 21:50:07,755 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} [2022-07-13 21:50:07,756 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2022-07-13 21:50:07,757 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 174 flow [2022-07-13 21:50:07,757 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) [2022-07-13 21:50:07,757 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:07,757 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] [2022-07-13 21:50:07,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:50:07,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 21:50:07,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:07,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1846199429, now seen corresponding path program 1 times [2022-07-13 21:50:07,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:07,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547698125] [2022-07-13 21:50:07,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:07,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:07,870 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 21:50:07,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:07,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547698125] [2022-07-13 21:50:07,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547698125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:07,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:07,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:07,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537797210] [2022-07-13 21:50:07,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:07,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:07,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:07,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:07,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:07,873 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 75 [2022-07-13 21:50:07,873 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) [2022-07-13 21:50:07,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:07,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 75 [2022-07-13 21:50:07,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:07,994 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2022-07-13 21:50:07,994 INFO L130 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-07-13 21:50:07,994 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. [2022-07-13 21:50:07,995 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 7 selfloop transitions, 7 changer transitions 11/73 dead transitions. [2022-07-13 21:50:07,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 293 flow [2022-07-13 21:50:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:50:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:50:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 627 transitions. [2022-07-13 21:50:07,997 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.836 [2022-07-13 21:50:07,997 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 627 transitions. [2022-07-13 21:50:07,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 627 transitions. [2022-07-13 21:50:07,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:07,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 627 transitions. [2022-07-13 21:50:08,000 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) [2022-07-13 21:50:08,001 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) [2022-07-13 21:50:08,001 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) [2022-07-13 21:50:08,001 INFO L186 Difference]: Start difference. First operand has 80 places, 61 transitions, 174 flow. Second operand 10 states and 627 transitions. [2022-07-13 21:50:08,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 293 flow [2022-07-13 21:50:08,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 254 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-07-13 21:50:08,005 INFO L242 Difference]: Finished difference. Result has 85 places, 61 transitions, 186 flow [2022-07-13 21:50:08,005 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} [2022-07-13 21:50:08,006 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2022-07-13 21:50:08,006 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 61 transitions, 186 flow [2022-07-13 21:50:08,006 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) [2022-07-13 21:50:08,006 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:08,006 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 21:50:08,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:50:08,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 21:50:08,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1132503556, now seen corresponding path program 1 times [2022-07-13 21:50:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:08,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873002524] [2022-07-13 21:50:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:08,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:08,112 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 21:50:08,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:08,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873002524] [2022-07-13 21:50:08,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873002524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:08,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:08,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:08,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420557916] [2022-07-13 21:50:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:08,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:08,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:08,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:08,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:08,115 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 75 [2022-07-13 21:50:08,116 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) [2022-07-13 21:50:08,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:08,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 75 [2022-07-13 21:50:08,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:08,203 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2022-07-13 21:50:08,204 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-13 21:50:08,204 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. [2022-07-13 21:50:08,205 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2022-07-13 21:50:08,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 60 transitions, 214 flow [2022-07-13 21:50:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:50:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 21:50:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 471 transitions. [2022-07-13 21:50:08,207 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.785 [2022-07-13 21:50:08,207 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 471 transitions. [2022-07-13 21:50:08,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 471 transitions. [2022-07-13 21:50:08,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:08,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 471 transitions. [2022-07-13 21:50:08,209 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) [2022-07-13 21:50:08,210 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) [2022-07-13 21:50:08,210 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) [2022-07-13 21:50:08,210 INFO L186 Difference]: Start difference. First operand has 85 places, 61 transitions, 186 flow. Second operand 8 states and 471 transitions. [2022-07-13 21:50:08,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 60 transitions, 214 flow [2022-07-13 21:50:08,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 168 flow, removed 13 selfloop flow, removed 13 redundant places. [2022-07-13 21:50:08,214 INFO L242 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2022-07-13 21:50:08,214 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} [2022-07-13 21:50:08,216 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2022-07-13 21:50:08,216 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2022-07-13 21:50:08,217 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) [2022-07-13 21:50:08,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-13 21:50:08,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-13 21:50:08,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-13 21:50:08,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:50:08,223 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-13 21:50:08,227 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:50:08,227 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:50:08,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:50:08 BasicIcfg [2022-07-13 21:50:08,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:50:08,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:50:08,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:50:08,236 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:50:08,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:06" (3/4) ... [2022-07-13 21:50:08,239 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 21:50:08,244 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-13 21:50:08,244 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-13 21:50:08,249 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-13 21:50:08,249 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 21:50:08,249 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 21:50:08,249 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 21:50:08,285 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:50:08,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:50:08,286 INFO L158 Benchmark]: Toolchain (without parser) took 2941.19ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 85.5MB in the beginning and 87.6MB in the end (delta: -2.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:08,286 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 58.4MB in the beginning and 58.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:50:08,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.13ms. Allocated memory is still 109.1MB. Free memory was 85.3MB in the beginning and 66.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-13 21:50:08,287 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.85ms. Allocated memory is still 109.1MB. Free memory was 65.8MB in the beginning and 64.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:08,287 INFO L158 Benchmark]: Boogie Preprocessor took 40.92ms. Allocated memory is still 109.1MB. Free memory was 63.8MB in the beginning and 62.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:08,287 INFO L158 Benchmark]: RCFGBuilder took 285.42ms. Allocated memory is still 109.1MB. Free memory was 62.6MB in the beginning and 80.7MB in the end (delta: -18.1MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-07-13 21:50:08,288 INFO L158 Benchmark]: TraceAbstraction took 1997.40ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 79.9MB in the beginning and 90.7MB in the end (delta: -10.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-07-13 21:50:08,288 INFO L158 Benchmark]: Witness Printer took 49.05ms. Allocated memory is still 132.1MB. Free memory was 90.7MB in the beginning and 87.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:50:08,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 58.4MB in the beginning and 58.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 505.13ms. Allocated memory is still 109.1MB. Free memory was 85.3MB in the beginning and 66.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.85ms. Allocated memory is still 109.1MB. Free memory was 65.8MB in the beginning and 64.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.92ms. Allocated memory is still 109.1MB. Free memory was 63.8MB in the beginning and 62.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 285.42ms. Allocated memory is still 109.1MB. Free memory was 62.6MB in the beginning and 80.7MB in the end (delta: -18.1MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1997.40ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 79.9MB in the beginning and 90.7MB in the end (delta: -10.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Witness Printer took 49.05ms. Allocated memory is still 132.1MB. Free memory was 90.7MB in the beginning and 87.6MB 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 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: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.2s 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, 0.5s 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, 0.6s 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! [2022-07-13 21:50:08,316 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