./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe034_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/safe034_tso.opt.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 25cb318ab1a29f2a64c5b78bc114eca9d9643fed ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 14:42:21,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 14:42:21,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 14:42:21,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 14:42:21,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 14:42:21,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 14:42:21,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 14:42:21,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 14:42:21,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 14:42:21,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 14:42:21,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 14:42:21,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 14:42:21,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 14:42:21,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 14:42:21,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 14:42:21,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 14:42:21,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 14:42:21,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 14:42:21,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 14:42:21,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 14:42:21,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 14:42:21,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 14:42:21,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 14:42:21,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 14:42:21,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 14:42:21,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 14:42:21,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 14:42:21,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 14:42:21,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 14:42:21,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 14:42:21,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 14:42:21,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 14:42:21,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 14:42:21,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 14:42:21,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 14:42:21,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 14:42:21,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 14:42:21,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 14:42:21,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 14:42:21,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 14:42:21,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 14:42:21,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 14:42:21,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 14:42:21,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 14:42:21,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 14:42:21,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 14:42:21,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 14:42:21,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 14:42:21,182 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 14:42:21,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 14:42:21,183 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 14:42:21,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 14:42:21,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 14:42:21,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 14:42:21,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 14:42:21,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 14:42:21,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 14:42:21,185 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 14:42:21,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 14:42:21,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 14:42:21,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 14:42:21,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 14:42:21,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 14:42:21,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 14:42:21,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:42:21,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 14:42:21,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 14:42:21,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 14:42:21,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 14:42:21,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 14:42:21,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 14:42:21,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 14:42:21,188 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25cb318ab1a29f2a64c5b78bc114eca9d9643fed [2021-08-26 14:42:21,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 14:42:21,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 14:42:21,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 14:42:21,547 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 14:42:21,548 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 14:42:21,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe034_tso.opt.i [2021-08-26 14:42:21,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908b937c2/15854fabe65647f58c573ae8a2b18dd4/FLAGeb9e2aaae [2021-08-26 14:42:22,057 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 14:42:22,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.opt.i [2021-08-26 14:42:22,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908b937c2/15854fabe65647f58c573ae8a2b18dd4/FLAGeb9e2aaae [2021-08-26 14:42:22,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908b937c2/15854fabe65647f58c573ae8a2b18dd4 [2021-08-26 14:42:22,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 14:42:22,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 14:42:22,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 14:42:22,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 14:42:22,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 14:42:22,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:22,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b741c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22, skipping insertion in model container [2021-08-26 14:42:22,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:22,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 14:42:22,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 14:42:22,667 WARN L228 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/safe034_tso.opt.i[949,962] [2021-08-26 14:42:22,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:42:22,850 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 14:42:22,860 WARN L228 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/safe034_tso.opt.i[949,962] [2021-08-26 14:42:22,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:42:22,955 INFO L208 MainTranslator]: Completed translation [2021-08-26 14:42:22,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22 WrapperNode [2021-08-26 14:42:22,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 14:42:22,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 14:42:22,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 14:42:22,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 14:42:22,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:22,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:23,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 14:42:23,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 14:42:23,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 14:42:23,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 14:42:23,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:23,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:23,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:23,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:23,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:23,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:23,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:23,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 14:42:23,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 14:42:23,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 14:42:23,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 14:42:23,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22" (1/1) ... [2021-08-26 14:42:23,067 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:42:23,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:42:23,099 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) [2021-08-26 14:42:23,101 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 [2021-08-26 14:42:23,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 14:42:23,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-26 14:42:23,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 14:42:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 14:42:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-26 14:42:23,129 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-26 14:42:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-26 14:42:23,129 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-26 14:42:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-26 14:42:23,129 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-26 14:42:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 14:42:23,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-26 14:42:23,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 14:42:23,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 14:42:23,131 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-26 14:42:23,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 14:42:23,498 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-26 14:42:23,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:42:23 BoogieIcfgContainer [2021-08-26 14:42:23,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 14:42:23,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 14:42:23,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 14:42:23,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 14:42:23,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:42:22" (1/3) ... [2021-08-26 14:42:23,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e06b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:42:23, skipping insertion in model container [2021-08-26 14:42:23,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:42:22" (2/3) ... [2021-08-26 14:42:23,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e06b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:42:23, skipping insertion in model container [2021-08-26 14:42:23,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:42:23" (3/3) ... [2021-08-26 14:42:23,507 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2021-08-26 14:42:23,514 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-26 14:42:23,515 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 14:42:23,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 14:42:23,515 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-26 14:42:23,545 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,546 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,546 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,548 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,548 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,549 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,549 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,557 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,557 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,558 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,561 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,561 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,562 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,571 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,573 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,575 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:42:23,578 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-26 14:42:23,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 14:42:23,627 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 14:42:23,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-26 14:42:23,644 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-26 14:42:23,653 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-08-26 14:42:23,655 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-08-26 14:42:23,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-08-26 14:42:23,704 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-08-26 14:42:23,704 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-26 14:42:23,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-26 14:42:23,711 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-08-26 14:42:26,643 INFO L131 LiptonReduction]: Checked pairs total: 2647 [2021-08-26 14:42:26,644 INFO L133 LiptonReduction]: Total number of compositions: 74 [2021-08-26 14:42:26,651 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-08-26 14:42:26,672 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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) [2021-08-26 14:42:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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) [2021-08-26 14:42:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 14:42:26,680 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:26,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:26,681 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:26,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:26,685 INFO L82 PathProgramCache]: Analyzing trace with hash -863554813, now seen corresponding path program 1 times [2021-08-26 14:42:26,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:26,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755164197] [2021-08-26 14:42:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:26,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:26,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:26,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755164197] [2021-08-26 14:42:26,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755164197] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:26,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:26,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-26 14:42:26,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355371307] [2021-08-26 14:42:26,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 14:42:26,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:26,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 14:42:26,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:42:26,943 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-08-26 14:42:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:26,988 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2021-08-26 14:42:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:42:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) Word has length 8 [2021-08-26 14:42:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:27,000 INFO L225 Difference]: With dead ends: 290 [2021-08-26 14:42:27,000 INFO L226 Difference]: Without dead ends: 242 [2021-08-26 14:42:27,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:42:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-08-26 14:42:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 218. [2021-08-26 14:42:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.654377880184332) internal successors, (576), 217 states have internal predecessors, (576), 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) [2021-08-26 14:42:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 576 transitions. [2021-08-26 14:42:27,042 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 576 transitions. Word has length 8 [2021-08-26 14:42:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:27,043 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 576 transitions. [2021-08-26 14:42:27,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-08-26 14:42:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 576 transitions. [2021-08-26 14:42:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 14:42:27,045 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:27,045 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:27,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 14:42:27,045 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:27,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:27,046 INFO L82 PathProgramCache]: Analyzing trace with hash 609800790, now seen corresponding path program 1 times [2021-08-26 14:42:27,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:27,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474486226] [2021-08-26 14:42:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:27,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:27,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:27,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474486226] [2021-08-26 14:42:27,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474486226] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:27,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:27,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:42:27,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964289996] [2021-08-26 14:42:27,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:42:27,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:27,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:42:27,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:42:27,156 INFO L87 Difference]: Start difference. First operand 218 states and 576 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-08-26 14:42:27,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:27,202 INFO L93 Difference]: Finished difference Result 237 states and 561 transitions. [2021-08-26 14:42:27,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 14:42:27,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2021-08-26 14:42:27,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:27,209 INFO L225 Difference]: With dead ends: 237 [2021-08-26 14:42:27,211 INFO L226 Difference]: Without dead ends: 173 [2021-08-26 14:42:27,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-08-26 14:42:27,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-08-26 14:42:27,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 2.3372093023255816) internal successors, (402), 172 states have internal predecessors, (402), 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) [2021-08-26 14:42:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 402 transitions. [2021-08-26 14:42:27,233 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 402 transitions. Word has length 9 [2021-08-26 14:42:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:27,233 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 402 transitions. [2021-08-26 14:42:27,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-08-26 14:42:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 402 transitions. [2021-08-26 14:42:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 14:42:27,235 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:27,235 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:27,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 14:42:27,236 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:27,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:27,237 INFO L82 PathProgramCache]: Analyzing trace with hash 299011224, now seen corresponding path program 1 times [2021-08-26 14:42:27,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:27,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891074251] [2021-08-26 14:42:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:27,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:27,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:27,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891074251] [2021-08-26 14:42:27,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891074251] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:27,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:27,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:42:27,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651490942] [2021-08-26 14:42:27,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 14:42:27,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:27,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 14:42:27,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:27,355 INFO L87 Difference]: Start difference. First operand 173 states and 402 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-26 14:42:27,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:27,403 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2021-08-26 14:42:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 14:42:27,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11 [2021-08-26 14:42:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:27,406 INFO L225 Difference]: With dead ends: 162 [2021-08-26 14:42:27,406 INFO L226 Difference]: Without dead ends: 125 [2021-08-26 14:42:27,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 14:42:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-26 14:42:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-08-26 14:42:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.120967741935484) internal successors, (263), 124 states have internal predecessors, (263), 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) [2021-08-26 14:42:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2021-08-26 14:42:27,430 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 11 [2021-08-26 14:42:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:27,431 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2021-08-26 14:42:27,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-26 14:42:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2021-08-26 14:42:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 14:42:27,433 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:27,433 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:27,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 14:42:27,434 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:27,435 INFO L82 PathProgramCache]: Analyzing trace with hash 42959736, now seen corresponding path program 1 times [2021-08-26 14:42:27,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:27,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001787858] [2021-08-26 14:42:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:27,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:27,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:27,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001787858] [2021-08-26 14:42:27,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001787858] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:27,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:27,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 14:42:27,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35818628] [2021-08-26 14:42:27,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 14:42:27,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 14:42:27,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 14:42:27,542 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-08-26 14:42:27,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:27,590 INFO L93 Difference]: Finished difference Result 118 states and 247 transitions. [2021-08-26 14:42:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 14:42:27,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) Word has length 14 [2021-08-26 14:42:27,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:27,592 INFO L225 Difference]: With dead ends: 118 [2021-08-26 14:42:27,593 INFO L226 Difference]: Without dead ends: 54 [2021-08-26 14:42:27,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-26 14:42:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-26 14:42:27,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-08-26 14:42:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.849056603773585) internal successors, (98), 53 states have internal predecessors, (98), 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) [2021-08-26 14:42:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2021-08-26 14:42:27,597 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 14 [2021-08-26 14:42:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:27,597 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2021-08-26 14:42:27,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-08-26 14:42:27,603 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2021-08-26 14:42:27,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 14:42:27,604 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:27,605 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:27,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 14:42:27,605 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:27,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1642792056, now seen corresponding path program 1 times [2021-08-26 14:42:27,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:27,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308764594] [2021-08-26 14:42:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:27,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:27,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:27,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308764594] [2021-08-26 14:42:27,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308764594] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:27,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:27,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 14:42:27,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722424202] [2021-08-26 14:42:27,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 14:42:27,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:27,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 14:42:27,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:27,729 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-08-26 14:42:27,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:27,758 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2021-08-26 14:42:27,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 14:42:27,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) Word has length 17 [2021-08-26 14:42:27,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:27,759 INFO L225 Difference]: With dead ends: 73 [2021-08-26 14:42:27,760 INFO L226 Difference]: Without dead ends: 36 [2021-08-26 14:42:27,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-26 14:42:27,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-26 14:42:27,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-26 14:42:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6) internal successors, (56), 35 states have internal predecessors, (56), 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) [2021-08-26 14:42:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2021-08-26 14:42:27,762 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2021-08-26 14:42:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:27,762 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2021-08-26 14:42:27,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-08-26 14:42:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2021-08-26 14:42:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 14:42:27,763 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:42:27,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:42:27,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 14:42:27,763 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-26 14:42:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:42:27,764 INFO L82 PathProgramCache]: Analyzing trace with hash 73863514, now seen corresponding path program 2 times [2021-08-26 14:42:27,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:42:27,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242565746] [2021-08-26 14:42:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:42:27,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:42:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:42:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:42:27,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:42:27,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242565746] [2021-08-26 14:42:27,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242565746] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:42:27,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:42:27,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:42:27,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516046631] [2021-08-26 14:42:27,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:42:27,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:42:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:42:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:42:27,807 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-08-26 14:42:27,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:42:27,817 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2021-08-26 14:42:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 14:42:27,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) Word has length 17 [2021-08-26 14:42:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:42:27,817 INFO L225 Difference]: With dead ends: 35 [2021-08-26 14:42:27,818 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 14:42:27,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:42:27,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 14:42:27,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 14:42:27,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-26 14:42:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 14:42:27,819 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-08-26 14:42:27,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:42:27,819 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 14:42:27,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-08-26 14:42:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 14:42:27,820 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 14:42:27,822 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:42:27,822 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-26 14:42:27,822 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-26 14:42:27,822 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-26 14:42:27,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 14:42:27,825 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-26 14:42:27,825 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 14:42:27,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:42:27 BasicIcfg [2021-08-26 14:42:27,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 14:42:27,828 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 14:42:27,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 14:42:27,828 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 14:42:27,828 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:42:23" (3/4) ... [2021-08-26 14:42:27,830 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 14:42:27,835 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-26 14:42:27,836 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-26 14:42:27,836 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-26 14:42:27,839 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-26 14:42:27,839 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 14:42:27,839 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:42:27,840 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:42:27,867 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 14:42:27,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 14:42:27,869 INFO L168 Benchmark]: Toolchain (without parser) took 5442.05 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 31.4 MB in the beginning and 69.6 MB in the end (delta: -38.3 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:27,869 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.1 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:42:27,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 528.54 ms. Allocated memory is still 54.5 MB. Free memory was 31.2 MB in the beginning and 30.5 MB in the end (delta: 716.7 kB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:27,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.85 ms. Allocated memory is still 54.5 MB. Free memory was 30.5 MB in the beginning and 28.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:27,870 INFO L168 Benchmark]: Boogie Preprocessor took 40.81 ms. Allocated memory is still 54.5 MB. Free memory was 28.5 MB in the beginning and 27.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:42:27,871 INFO L168 Benchmark]: RCFGBuilder took 443.34 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 27.0 MB in the beginning and 34.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:27,871 INFO L168 Benchmark]: TraceAbstraction took 4326.23 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 33.8 MB in the beginning and 72.8 MB in the end (delta: -39.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:27,871 INFO L168 Benchmark]: Witness Printer took 40.03 ms. Allocated memory is still 119.5 MB. Free memory was 72.8 MB in the beginning and 69.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 14:42:27,873 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.1 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 528.54 ms. Allocated memory is still 54.5 MB. Free memory was 31.2 MB in the beginning and 30.5 MB in the end (delta: 716.7 kB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.85 ms. Allocated memory is still 54.5 MB. Free memory was 30.5 MB in the beginning and 28.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.81 ms. Allocated memory is still 54.5 MB. Free memory was 28.5 MB in the beginning and 27.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 443.34 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 27.0 MB in the beginning and 34.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4326.23 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 33.8 MB in the beginning and 72.8 MB in the end (delta: -39.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * Witness Printer took 40.03 ms. Allocated memory is still 119.5 MB. Free memory was 72.8 MB in the beginning and 69.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2988.6ms, 92 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 2647 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1673, positive: 1590, positive conditional: 0, positive unconditional: 1590, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1074, positive: 1030, positive conditional: 0, positive unconditional: 1030, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1074, positive: 1023, positive conditional: 0, positive unconditional: 1023, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 51, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 114, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 88, negative conditional: 0, negative unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1673, positive: 560, positive conditional: 0, positive unconditional: 560, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 1074, unknown conditional: 0, unknown unconditional: 1074] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4206.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 13.7ms, AutomataDifference: 279.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3045.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 118 SDtfs, 134 SDslu, 171 SDs, 0 SdLazy, 86 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 108.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 82.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.3ms SsaConstructionTime, 196.7ms SatisfiabilityAnalysisTime, 399.8ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2021-08-26 14:42:27,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...