./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/scull.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-atomic/scull.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 aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:16:57,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:16:57,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:16:57,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:16:57,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:16:57,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:16:57,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:16:57,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:16:57,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:16:57,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:16:57,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:16:57,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:16:57,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:16:57,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:16:57,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:16:57,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:16:57,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:16:57,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:16:57,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:16:57,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:16:57,089 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:16:57,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:16:57,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:16:57,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:16:57,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:16:57,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:16:57,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:16:57,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:16:57,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:16:57,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:16:57,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:16:57,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:16:57,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:16:57,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:16:57,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:16:57,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:16:57,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:16:57,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:16:57,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:16:57,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:16:57,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:16:57,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:16:57,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:16:57,147 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:16:57,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:16:57,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:16:57,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:16:57,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:16:57,148 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:16:57,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:16:57,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:16:57,149 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:16:57,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:16:57,150 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:16:57,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:16:57,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:16:57,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:16:57,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:16:57,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:16:57,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:16:57,152 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:16:57,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:16:57,152 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:16:57,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:16:57,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:16:57,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:16:57,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:16:57,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:16:57,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:16:57,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:16:57,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:16:57,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:16:57,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:16:57,154 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:16:57,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:16:57,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:16:57,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b [2022-07-22 21:16:57,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:16:57,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:16:57,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:16:57,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:16:57,429 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:16:57,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/scull.i [2022-07-22 21:16:57,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf02e13b/b4ba439201594078a6978659eddd1849/FLAG6e3883d07 [2022-07-22 21:16:57,974 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:16:57,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/scull.i [2022-07-22 21:16:57,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf02e13b/b4ba439201594078a6978659eddd1849/FLAG6e3883d07 [2022-07-22 21:16:58,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf02e13b/b4ba439201594078a6978659eddd1849 [2022-07-22 21:16:58,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:16:58,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:16:58,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:16:58,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:16:58,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:16:58,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:58,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3a32d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58, skipping insertion in model container [2022-07-22 21:16:58,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:58,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:16:58,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:16:58,674 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-atomic/scull.i[30879,30892] [2022-07-22 21:16:58,690 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-atomic/scull.i[31740,31753] [2022-07-22 21:16:58,697 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-atomic/scull.i[32508,32521] [2022-07-22 21:16:58,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:16:58,738 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:16:58,784 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-atomic/scull.i[30879,30892] [2022-07-22 21:16:58,798 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-atomic/scull.i[31740,31753] [2022-07-22 21:16:58,806 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-atomic/scull.i[32508,32521] [2022-07-22 21:16:58,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:16:58,881 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:16:58,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58 WrapperNode [2022-07-22 21:16:58,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:16:58,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:16:58,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:16:58,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:16:58,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:58,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:58,982 INFO L137 Inliner]: procedures = 185, calls = 58, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 369 [2022-07-22 21:16:58,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:16:58,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:16:58,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:16:58,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:16:58,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:58,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:59,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:59,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:59,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:59,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:59,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:59,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:16:59,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:16:59,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:16:59,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:16:59,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58" (1/1) ... [2022-07-22 21:16:59,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:16:59,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:16:59,073 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) [2022-07-22 21:16:59,075 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 [2022-07-22 21:16:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:16:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:16:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:16:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:16:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:16:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:16:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:16:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:16:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure loader [2022-07-22 21:16:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure loader [2022-07-22 21:16:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:16:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:16:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:16:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:16:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:16:59,102 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:16:59,261 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:16:59,262 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:16:59,349 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L890: assume { :end_inline_scull_trim } true; [2022-07-22 21:16:59,349 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-1: assume -2147483648 <= scull_cleanup_module_#t~ret28#1 && scull_cleanup_module_#t~ret28#1 <= 2147483647; [2022-07-22 21:16:59,349 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-2: havoc scull_cleanup_module_#t~ret28#1; [2022-07-22 21:16:59,349 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint scull_trim_returnLabel#1: scull_cleanup_module_#t~ret28#1 := scull_trim_#res#1; [2022-07-22 21:16:59,350 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L887: assume { :end_inline_scull_cleanup_module } true; [2022-07-22 21:16:59,350 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L898: scull_init_module_#res#1 := scull_init_module_~result~0#1; [2022-07-22 21:16:59,659 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:16:59,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:16:59,671 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:16:59,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:16:59 BoogieIcfgContainer [2022-07-22 21:16:59,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:16:59,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:16:59,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:16:59,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:16:59,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:16:58" (1/3) ... [2022-07-22 21:16:59,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59db63ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:16:59, skipping insertion in model container [2022-07-22 21:16:59,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:58" (2/3) ... [2022-07-22 21:16:59,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59db63ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:16:59, skipping insertion in model container [2022-07-22 21:16:59,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:16:59" (3/3) ... [2022-07-22 21:16:59,710 INFO L111 eAbstractionObserver]: Analyzing ICFG scull.i [2022-07-22 21:16:59,714 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:16:59,734 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:16:59,735 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-22 21:16:59,736 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:16:59,840 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:16:59,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 414 places, 420 transitions, 864 flow [2022-07-22 21:17:00,067 INFO L129 PetriNetUnfolder]: 16/417 cut-off events. [2022-07-22 21:17:00,068 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:17:00,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 417 events. 16/417 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 943 event pairs, 0 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 368. Up to 4 conditions per place. [2022-07-22 21:17:00,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 414 places, 420 transitions, 864 flow [2022-07-22 21:17:00,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 405 transitions, 825 flow [2022-07-22 21:17:00,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:17:00,105 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@656f41c5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65639987 [2022-07-22 21:17:00,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-22 21:17:00,164 INFO L129 PetriNetUnfolder]: 1/209 cut-off events. [2022-07-22 21:17:00,165 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:17:00,165 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:00,166 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:00,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err1ASSERT_VIOLATIONERROR_FUNCTION, thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:17:00,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1431181784, now seen corresponding path program 1 times [2022-07-22 21:17:00,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:00,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058814664] [2022-07-22 21:17:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:00,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:00,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:00,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058814664] [2022-07-22 21:17:00,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058814664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:00,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:00,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:17:00,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412611159] [2022-07-22 21:17:00,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:00,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:17:00,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:00,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:17:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:17:00,542 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 420 [2022-07-22 21:17:00,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 405 transitions, 825 flow. Second operand has 3 states, 3 states have (on average 394.6666666666667) internal successors, (1184), 3 states have internal predecessors, (1184), 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) [2022-07-22 21:17:00,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:00,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 420 [2022-07-22 21:17:00,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:01,279 INFO L129 PetriNetUnfolder]: 213/2878 cut-off events. [2022-07-22 21:17:01,279 INFO L130 PetriNetUnfolder]: For 224/230 co-relation queries the response was YES. [2022-07-22 21:17:01,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 2878 events. 213/2878 cut-off events. For 224/230 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 22293 event pairs, 57 based on Foata normal form. 52/2788 useless extension candidates. Maximal degree in co-relation 2984. Up to 192 conditions per place. [2022-07-22 21:17:01,348 INFO L132 encePairwiseOnDemand]: 408/420 looper letters, 25 selfloop transitions, 4 changer transitions 0/408 dead transitions. [2022-07-22 21:17:01,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 408 transitions, 898 flow [2022-07-22 21:17:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:17:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:17:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1218 transitions. [2022-07-22 21:17:01,367 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9666666666666667 [2022-07-22 21:17:01,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1218 transitions. [2022-07-22 21:17:01,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1218 transitions. [2022-07-22 21:17:01,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:01,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1218 transitions. [2022-07-22 21:17:01,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.0) internal successors, (1218), 3 states have internal predecessors, (1218), 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) [2022-07-22 21:17:01,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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) [2022-07-22 21:17:01,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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) [2022-07-22 21:17:01,391 INFO L186 Difference]: Start difference. First operand has 399 places, 405 transitions, 825 flow. Second operand 3 states and 1218 transitions. [2022-07-22 21:17:01,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 408 transitions, 898 flow [2022-07-22 21:17:01,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 408 transitions, 884 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-22 21:17:01,405 INFO L242 Difference]: Finished difference. Result has 394 places, 401 transitions, 840 flow [2022-07-22 21:17:01,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=840, PETRI_PLACES=394, PETRI_TRANSITIONS=401} [2022-07-22 21:17:01,411 INFO L279 CegarLoopForPetriNet]: 399 programPoint places, -5 predicate places. [2022-07-22 21:17:01,411 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 401 transitions, 840 flow [2022-07-22 21:17:01,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 394.6666666666667) internal successors, (1184), 3 states have internal predecessors, (1184), 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) [2022-07-22 21:17:01,412 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:01,412 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:01,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:17:01,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err1ASSERT_VIOLATIONERROR_FUNCTION, thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:17:01,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:01,413 INFO L85 PathProgramCache]: Analyzing trace with hash -395173290, now seen corresponding path program 1 times [2022-07-22 21:17:01,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:01,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238150951] [2022-07-22 21:17:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:01,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:01,474 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 21:17:01,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122015643] [2022-07-22 21:17:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:01,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:17:01,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:17:01,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:17:01,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:17:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:01,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 21:17:01,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:17:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:01,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:17:01,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:01,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238150951] [2022-07-22 21:17:01,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 21:17:01,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122015643] [2022-07-22 21:17:01,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122015643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:01,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:01,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:17:01,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551999965] [2022-07-22 21:17:01,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:01,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:17:01,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:17:01,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:17:01,778 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 420 [2022-07-22 21:17:01,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 401 transitions, 840 flow. Second operand has 3 states, 3 states have (on average 394.6666666666667) internal successors, (1184), 3 states have internal predecessors, (1184), 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) [2022-07-22 21:17:01,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:01,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 420 [2022-07-22 21:17:01,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:02,442 INFO L129 PetriNetUnfolder]: 202/3045 cut-off events. [2022-07-22 21:17:02,442 INFO L130 PetriNetUnfolder]: For 266/315 co-relation queries the response was YES. [2022-07-22 21:17:02,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3488 conditions, 3045 events. 202/3045 cut-off events. For 266/315 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 23478 event pairs, 30 based on Foata normal form. 22/2938 useless extension candidates. Maximal degree in co-relation 2450. Up to 181 conditions per place. [2022-07-22 21:17:02,486 INFO L132 encePairwiseOnDemand]: 411/420 looper letters, 22 selfloop transitions, 7 changer transitions 0/408 dead transitions. [2022-07-22 21:17:02,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 408 transitions, 924 flow [2022-07-22 21:17:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:17:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:17:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1209 transitions. [2022-07-22 21:17:02,491 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9595238095238096 [2022-07-22 21:17:02,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1209 transitions. [2022-07-22 21:17:02,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1209 transitions. [2022-07-22 21:17:02,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:02,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1209 transitions. [2022-07-22 21:17:02,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 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) [2022-07-22 21:17:02,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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) [2022-07-22 21:17:02,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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) [2022-07-22 21:17:02,503 INFO L186 Difference]: Start difference. First operand has 394 places, 401 transitions, 840 flow. Second operand 3 states and 1209 transitions. [2022-07-22 21:17:02,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 408 transitions, 924 flow [2022-07-22 21:17:02,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 408 transitions, 914 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:17:02,516 INFO L242 Difference]: Finished difference. Result has 396 places, 404 transitions, 884 flow [2022-07-22 21:17:02,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=884, PETRI_PLACES=396, PETRI_TRANSITIONS=404} [2022-07-22 21:17:02,518 INFO L279 CegarLoopForPetriNet]: 399 programPoint places, -3 predicate places. [2022-07-22 21:17:02,518 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 404 transitions, 884 flow [2022-07-22 21:17:02,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 394.6666666666667) internal successors, (1184), 3 states have internal predecessors, (1184), 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) [2022-07-22 21:17:02,519 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:02,520 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:02,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 21:17:02,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:17:02,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err1ASSERT_VIOLATIONERROR_FUNCTION, thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:17:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:02,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1429011664, now seen corresponding path program 1 times [2022-07-22 21:17:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:02,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608477485] [2022-07-22 21:17:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:02,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:02,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 21:17:02,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149983530] [2022-07-22 21:17:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:02,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:17:02,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:17:02,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:17:02,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:17:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:02,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 21:17:02,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:17:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:02,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:17:02,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:02,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608477485] [2022-07-22 21:17:02,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 21:17:02,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149983530] [2022-07-22 21:17:02,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149983530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:02,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:02,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:17:02,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358298429] [2022-07-22 21:17:02,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:02,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:17:02,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:02,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:17:02,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:17:02,970 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 420 [2022-07-22 21:17:02,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 404 transitions, 884 flow. Second operand has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 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) [2022-07-22 21:17:02,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:02,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 420 [2022-07-22 21:17:02,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:03,383 INFO L129 PetriNetUnfolder]: 156/2170 cut-off events. [2022-07-22 21:17:03,383 INFO L130 PetriNetUnfolder]: For 396/442 co-relation queries the response was YES. [2022-07-22 21:17:03,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 2170 events. 156/2170 cut-off events. For 396/442 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 14448 event pairs, 45 based on Foata normal form. 19/2091 useless extension candidates. Maximal degree in co-relation 1698. Up to 154 conditions per place. [2022-07-22 21:17:03,420 INFO L132 encePairwiseOnDemand]: 414/420 looper letters, 23 selfloop transitions, 4 changer transitions 0/406 dead transitions. [2022-07-22 21:17:03,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 406 transitions, 940 flow [2022-07-22 21:17:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:17:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:17:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1205 transitions. [2022-07-22 21:17:03,423 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9563492063492064 [2022-07-22 21:17:03,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1205 transitions. [2022-07-22 21:17:03,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1205 transitions. [2022-07-22 21:17:03,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:03,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1205 transitions. [2022-07-22 21:17:03,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 401.6666666666667) internal successors, (1205), 3 states have internal predecessors, (1205), 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) [2022-07-22 21:17:03,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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) [2022-07-22 21:17:03,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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) [2022-07-22 21:17:03,490 INFO L186 Difference]: Start difference. First operand has 396 places, 404 transitions, 884 flow. Second operand 3 states and 1205 transitions. [2022-07-22 21:17:03,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 406 transitions, 940 flow [2022-07-22 21:17:03,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 406 transitions, 928 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:17:03,498 INFO L242 Difference]: Finished difference. Result has 397 places, 403 transitions, 880 flow [2022-07-22 21:17:03,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=880, PETRI_PLACES=397, PETRI_TRANSITIONS=403} [2022-07-22 21:17:03,501 INFO L279 CegarLoopForPetriNet]: 399 programPoint places, -2 predicate places. [2022-07-22 21:17:03,501 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 403 transitions, 880 flow [2022-07-22 21:17:03,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 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) [2022-07-22 21:17:03,503 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:03,503 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:03,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:17:03,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-22 21:17:03,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err1ASSERT_VIOLATIONERROR_FUNCTION, thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:17:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1140159061, now seen corresponding path program 1 times [2022-07-22 21:17:03,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:03,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894028180] [2022-07-22 21:17:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:03,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:03,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:03,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894028180] [2022-07-22 21:17:03,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894028180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:03,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:03,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:17:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406365748] [2022-07-22 21:17:03,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:03,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:17:03,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:17:03,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:17:03,853 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 420 [2022-07-22 21:17:03,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 403 transitions, 880 flow. Second operand has 4 states, 4 states have (on average 397.25) internal successors, (1589), 4 states have internal predecessors, (1589), 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) [2022-07-22 21:17:03,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:03,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 420 [2022-07-22 21:17:03,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:04,406 INFO L129 PetriNetUnfolder]: 130/2829 cut-off events. [2022-07-22 21:17:04,406 INFO L130 PetriNetUnfolder]: For 150/174 co-relation queries the response was YES. [2022-07-22 21:17:04,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3129 conditions, 2829 events. 130/2829 cut-off events. For 150/174 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 19381 event pairs, 12 based on Foata normal form. 2/2708 useless extension candidates. Maximal degree in co-relation 2191. Up to 64 conditions per place. [2022-07-22 21:17:04,449 INFO L132 encePairwiseOnDemand]: 414/420 looper letters, 14 selfloop transitions, 5 changer transitions 0/403 dead transitions. [2022-07-22 21:17:04,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 403 transitions, 920 flow [2022-07-22 21:17:04,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:17:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:17:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1596 transitions. [2022-07-22 21:17:04,454 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.95 [2022-07-22 21:17:04,454 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1596 transitions. [2022-07-22 21:17:04,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1596 transitions. [2022-07-22 21:17:04,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:04,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1596 transitions. [2022-07-22 21:17:04,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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) [2022-07-22 21:17:04,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 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) [2022-07-22 21:17:04,464 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 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) [2022-07-22 21:17:04,464 INFO L186 Difference]: Start difference. First operand has 397 places, 403 transitions, 880 flow. Second operand 4 states and 1596 transitions. [2022-07-22 21:17:04,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 403 transitions, 920 flow [2022-07-22 21:17:04,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 403 transitions, 916 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:17:04,472 INFO L242 Difference]: Finished difference. Result has 397 places, 399 transitions, 874 flow [2022-07-22 21:17:04,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=874, PETRI_PLACES=397, PETRI_TRANSITIONS=399} [2022-07-22 21:17:04,474 INFO L279 CegarLoopForPetriNet]: 399 programPoint places, -2 predicate places. [2022-07-22 21:17:04,475 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 399 transitions, 874 flow [2022-07-22 21:17:04,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 397.25) internal successors, (1589), 4 states have internal predecessors, (1589), 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) [2022-07-22 21:17:04,476 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:04,476 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:04,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:17:04,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err1ASSERT_VIOLATIONERROR_FUNCTION, thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:17:04,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:04,477 INFO L85 PathProgramCache]: Analyzing trace with hash -925020426, now seen corresponding path program 1 times [2022-07-22 21:17:04,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:04,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148602364] [2022-07-22 21:17:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:04,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:04,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 21:17:04,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749040722] [2022-07-22 21:17:04,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:04,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:17:04,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:17:04,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:17:04,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:17:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:04,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:17:04,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:17:04,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 21:17:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:04,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:17:04,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:04,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148602364] [2022-07-22 21:17:04,775 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 21:17:04,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749040722] [2022-07-22 21:17:04,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749040722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:04,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:04,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:17:04,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163983687] [2022-07-22 21:17:04,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:04,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:17:04,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:04,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:17:04,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:17:04,785 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 420 [2022-07-22 21:17:04,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 399 transitions, 874 flow. Second operand has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 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) [2022-07-22 21:17:04,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:04,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 420 [2022-07-22 21:17:04,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:05,199 INFO L129 PetriNetUnfolder]: 104/2197 cut-off events. [2022-07-22 21:17:05,199 INFO L130 PetriNetUnfolder]: For 99/102 co-relation queries the response was YES. [2022-07-22 21:17:05,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2495 conditions, 2197 events. 104/2197 cut-off events. For 99/102 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 13643 event pairs, 21 based on Foata normal form. 26/2133 useless extension candidates. Maximal degree in co-relation 1510. Up to 71 conditions per place. [2022-07-22 21:17:05,215 INFO L132 encePairwiseOnDemand]: 412/420 looper letters, 0 selfloop transitions, 0 changer transitions 394/394 dead transitions. [2022-07-22 21:17:05,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 394 transitions, 906 flow [2022-07-22 21:17:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:17:05,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:17:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1200 transitions. [2022-07-22 21:17:05,219 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9523809523809523 [2022-07-22 21:17:05,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1200 transitions. [2022-07-22 21:17:05,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1200 transitions. [2022-07-22 21:17:05,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:05,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1200 transitions. [2022-07-22 21:17:05,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 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) [2022-07-22 21:17:05,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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) [2022-07-22 21:17:05,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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) [2022-07-22 21:17:05,226 INFO L186 Difference]: Start difference. First operand has 397 places, 399 transitions, 874 flow. Second operand 3 states and 1200 transitions. [2022-07-22 21:17:05,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 394 transitions, 906 flow [2022-07-22 21:17:05,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 394 transitions, 878 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-07-22 21:17:05,234 INFO L242 Difference]: Finished difference. Result has 387 places, 0 transitions, 0 flow [2022-07-22 21:17:05,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=387, PETRI_TRANSITIONS=0} [2022-07-22 21:17:05,237 INFO L279 CegarLoopForPetriNet]: 399 programPoint places, -12 predicate places. [2022-07-22 21:17:05,237 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 0 transitions, 0 flow [2022-07-22 21:17:05,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 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) [2022-07-22 21:17:05,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2022-07-22 21:17:05,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2022-07-22 21:17:05,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2022-07-22 21:17:05,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2022-07-22 21:17:05,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 11 remaining) [2022-07-22 21:17:05,243 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2022-07-22 21:17:05,243 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2022-07-22 21:17:05,243 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2022-07-22 21:17:05,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2022-07-22 21:17:05,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2022-07-22 21:17:05,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2022-07-22 21:17:05,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 21:17:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:17:05,460 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-22 21:17:05,464 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:17:05,464 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:17:05,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:17:05 BasicIcfg [2022-07-22 21:17:05,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:17:05,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:17:05,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:17:05,470 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:17:05,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:16:59" (3/4) ... [2022-07-22 21:17:05,473 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:17:05,480 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure loader [2022-07-22 21:17:05,481 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-22 21:17:05,485 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-22 21:17:05,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-07-22 21:17:05,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-22 21:17:05,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 21:17:05,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 21:17:05,530 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:17:05,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:17:05,531 INFO L158 Benchmark]: Toolchain (without parser) took 7227.67ms. Allocated memory was 107.0MB in the beginning and 700.4MB in the end (delta: 593.5MB). Free memory was 82.0MB in the beginning and 509.9MB in the end (delta: -427.9MB). Peak memory consumption was 166.4MB. Max. memory is 16.1GB. [2022-07-22 21:17:05,531 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 79.7MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:17:05,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.04ms. Allocated memory is still 107.0MB. Free memory was 81.8MB in the beginning and 82.4MB in the end (delta: -598.0kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2022-07-22 21:17:05,532 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.78ms. Allocated memory is still 107.0MB. Free memory was 82.4MB in the beginning and 82.0MB in the end (delta: 401.4kB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-07-22 21:17:05,532 INFO L158 Benchmark]: Boogie Preprocessor took 45.89ms. Allocated memory is still 107.0MB. Free memory was 82.0MB in the beginning and 79.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:17:05,532 INFO L158 Benchmark]: RCFGBuilder took 638.62ms. Allocated memory is still 107.0MB. Free memory was 79.9MB in the beginning and 55.1MB in the end (delta: 24.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-22 21:17:05,533 INFO L158 Benchmark]: TraceAbstraction took 5764.32ms. Allocated memory was 107.0MB in the beginning and 700.4MB in the end (delta: 593.5MB). Free memory was 80.6MB in the beginning and 512.3MB in the end (delta: -431.7MB). Peak memory consumption was 387.1MB. Max. memory is 16.1GB. [2022-07-22 21:17:05,533 INFO L158 Benchmark]: Witness Printer took 61.18ms. Allocated memory is still 700.4MB. Free memory was 512.3MB in the beginning and 509.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:17:05,534 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 79.7MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 576.04ms. Allocated memory is still 107.0MB. Free memory was 81.8MB in the beginning and 82.4MB in the end (delta: -598.0kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.78ms. Allocated memory is still 107.0MB. Free memory was 82.4MB in the beginning and 82.0MB in the end (delta: 401.4kB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.89ms. Allocated memory is still 107.0MB. Free memory was 82.0MB in the beginning and 79.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 638.62ms. Allocated memory is still 107.0MB. Free memory was 79.9MB in the beginning and 55.1MB in the end (delta: 24.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5764.32ms. Allocated memory was 107.0MB in the beginning and 700.4MB in the end (delta: 593.5MB). Free memory was 80.6MB in the beginning and 512.3MB in the end (delta: -431.7MB). Peak memory consumption was 387.1MB. Max. memory is 16.1GB. * Witness Printer took 61.18ms. Allocated memory is still 700.4MB. Free memory was 512.3MB in the beginning and 509.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 736]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 771]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 736]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 804]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 744 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135 IncrementalHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 57 mSDtfsCounter, 135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=884occurred in iteration=2, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 733 NumberOfCodeBlocks, 733 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 728 ConstructedInterpolants, 0 QuantifiedInterpolants, 1070 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1105 ConjunctsInSsa, 11 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-22 21:17:05,561 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