./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/dekker.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/dekker.i -s /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer --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 b09e522566a82367f1e090dbdcfe12204e8a578a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:03:02,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:03:02,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:03:02,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:03:02,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:03:02,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:03:02,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:03:02,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:03:02,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:03:02,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:03:02,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:03:02,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:03:02,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:03:02,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:03:02,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:03:02,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:03:02,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:03:02,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:03:02,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:03:02,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:03:02,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:03:02,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:03:02,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:03:02,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:03:02,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:03:02,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:03:02,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:03:02,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:03:02,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:03:02,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:03:02,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:03:02,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:03:02,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:03:02,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:03:02,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:03:02,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:03:02,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:03:02,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:03:02,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:03:02,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:03:02,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:03:02,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:03:02,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:03:02,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:03:02,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:03:02,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:03:02,197 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:03:02,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:03:02,198 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:03:02,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:03:02,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:03:02,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:03:02,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:03:02,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:03:02,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:03:02,200 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:03:02,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:03:02,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:03:02,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:03:02,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:03:02,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:03:02,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:03:02,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:03:02,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:03:02,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:03:02,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:03:02,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:03:02,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:03:02,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:03:02,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:03:02,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:03:02,203 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:/tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b09e522566a82367f1e090dbdcfe12204e8a578a [2020-11-28 03:03:02,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:03:02,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:03:02,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:03:02,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:03:02,535 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:03:02,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/../../sv-benchmarks/c/pthread-atomic/dekker.i [2020-11-28 03:03:02,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/data/5d990ceb3/a78397ad49244854b9a4280cd7816cfe/FLAGa1eeb0de8 [2020-11-28 03:03:03,216 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:03:03,216 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/sv-benchmarks/c/pthread-atomic/dekker.i [2020-11-28 03:03:03,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/data/5d990ceb3/a78397ad49244854b9a4280cd7816cfe/FLAGa1eeb0de8 [2020-11-28 03:03:03,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/data/5d990ceb3/a78397ad49244854b9a4280cd7816cfe [2020-11-28 03:03:03,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:03:03,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:03:03,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:03:03,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:03:03,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:03:03,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:03" (1/1) ... [2020-11-28 03:03:03,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b38b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03, skipping insertion in model container [2020-11-28 03:03:03,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:03" (1/1) ... [2020-11-28 03:03:03,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:03:03,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:03:03,829 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-28 03:03:03,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:03:04,008 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:03:04,026 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-28 03:03:04,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:03:04,140 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:03:04,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04 WrapperNode [2020-11-28 03:03:04,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:03:04,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:03:04,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:03:04,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:03:04,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04" (1/1) ... [2020-11-28 03:03:04,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04" (1/1) ... [2020-11-28 03:03:04,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:03:04,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:03:04,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:03:04,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:03:04,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04" (1/1) ... [2020-11-28 03:03:04,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04" (1/1) ... [2020-11-28 03:03:04,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04" (1/1) ... [2020-11-28 03:03:04,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04" (1/1) ... [2020-11-28 03:03:04,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04" (1/1) ... [2020-11-28 03:03:04,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04" (1/1) ... [2020-11-28 03:03:04,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04" (1/1) ... [2020-11-28 03:03:04,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:03:04,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:03:04,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:03:04,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:03:04,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:03:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:03:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-11-28 03:03:04,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-11-28 03:03:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-28 03:03:04,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-28 03:03:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:03:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:03:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:03:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:03:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:03:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:03:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:03:04,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:03:04,329 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 03:03:04,829 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:03:04,829 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 03:03:04,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:04 BoogieIcfgContainer [2020-11-28 03:03:04,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:03:04,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:03:04,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:03:04,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:03:04,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:03:03" (1/3) ... [2020-11-28 03:03:04,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708aa6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:04, skipping insertion in model container [2020-11-28 03:03:04,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:04" (2/3) ... [2020-11-28 03:03:04,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708aa6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:04, skipping insertion in model container [2020-11-28 03:03:04,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:04" (3/3) ... [2020-11-28 03:03:04,846 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2020-11-28 03:03:04,864 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:03:04,864 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:03:04,869 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:03:04,870 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:03:04,938 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,938 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,939 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,940 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,940 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,941 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,941 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,941 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,942 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,942 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,942 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,942 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,943 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,943 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,943 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,943 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,944 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,944 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,944 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,944 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,945 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,947 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,948 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,948 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,964 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,964 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,964 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,965 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,965 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,965 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,965 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,976 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,977 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,977 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,978 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:03:04,994 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-28 03:03:05,008 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 03:03:05,041 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:03:05,041 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:03:05,042 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:03:05,042 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:03:05,042 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:03:05,042 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:03:05,042 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:03:05,043 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:03:05,059 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:03:05,061 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 104 transitions, 230 flow [2020-11-28 03:03:05,064 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 104 transitions, 230 flow [2020-11-28 03:03:05,066 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 94 places, 104 transitions, 230 flow [2020-11-28 03:03:05,134 INFO L129 PetriNetUnfolder]: 16/104 cut-off events. [2020-11-28 03:03:05,134 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-28 03:03:05,140 INFO L80 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 104 events. 16/104 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 206 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2020-11-28 03:03:05,146 INFO L116 LiptonReduction]: Number of co-enabled transitions 2580 [2020-11-28 03:03:07,182 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-11-28 03:03:07,356 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-28 03:03:07,802 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-11-28 03:03:07,993 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-28 03:03:08,105 INFO L131 LiptonReduction]: Checked pairs total: 8505 [2020-11-28 03:03:08,106 INFO L133 LiptonReduction]: Total number of compositions: 90 [2020-11-28 03:03:08,112 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 46 transitions, 114 flow [2020-11-28 03:03:08,145 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 418 states. [2020-11-28 03:03:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states. [2020-11-28 03:03:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:03:08,152 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:08,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:03:08,152 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:03:08,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:08,158 INFO L82 PathProgramCache]: Analyzing trace with hash 341857764, now seen corresponding path program 1 times [2020-11-28 03:03:08,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:08,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489040132] [2020-11-28 03:03:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:08,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489040132] [2020-11-28 03:03:08,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:08,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:03:08,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127428418] [2020-11-28 03:03:08,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:03:08,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:08,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:03:08,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:03:08,403 INFO L87 Difference]: Start difference. First operand 418 states. Second operand 3 states. [2020-11-28 03:03:08,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:08,495 INFO L93 Difference]: Finished difference Result 472 states and 1167 transitions. [2020-11-28 03:03:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:03:08,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 03:03:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:08,533 INFO L225 Difference]: With dead ends: 472 [2020-11-28 03:03:08,533 INFO L226 Difference]: Without dead ends: 313 [2020-11-28 03:03:08,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:03:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-11-28 03:03:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 295. [2020-11-28 03:03:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-11-28 03:03:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 781 transitions. [2020-11-28 03:03:08,647 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 781 transitions. Word has length 6 [2020-11-28 03:03:08,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:08,648 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 781 transitions. [2020-11-28 03:03:08,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:03:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 781 transitions. [2020-11-28 03:03:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:03:08,651 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:08,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:08,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:03:08,652 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:03:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:08,655 INFO L82 PathProgramCache]: Analyzing trace with hash -2101881306, now seen corresponding path program 1 times [2020-11-28 03:03:08,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:08,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203810259] [2020-11-28 03:03:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:08,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203810259] [2020-11-28 03:03:08,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:08,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:03:08,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708514521] [2020-11-28 03:03:08,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:03:08,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:08,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:03:08,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:03:08,747 INFO L87 Difference]: Start difference. First operand 295 states and 781 transitions. Second operand 3 states. [2020-11-28 03:03:08,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:08,783 INFO L93 Difference]: Finished difference Result 284 states and 735 transitions. [2020-11-28 03:03:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:03:08,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 03:03:08,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:08,787 INFO L225 Difference]: With dead ends: 284 [2020-11-28 03:03:08,787 INFO L226 Difference]: Without dead ends: 206 [2020-11-28 03:03:08,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:03:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-11-28 03:03:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-11-28 03:03:08,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-28 03:03:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 539 transitions. [2020-11-28 03:03:08,815 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 539 transitions. Word has length 8 [2020-11-28 03:03:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:08,816 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 539 transitions. [2020-11-28 03:03:08,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:03:08,816 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 539 transitions. [2020-11-28 03:03:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:03:08,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:08,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:08,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:03:08,821 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:03:08,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:08,822 INFO L82 PathProgramCache]: Analyzing trace with hash 64177494, now seen corresponding path program 1 times [2020-11-28 03:03:08,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:08,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13505385] [2020-11-28 03:03:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:08,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13505385] [2020-11-28 03:03:08,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:08,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:03:08,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379385291] [2020-11-28 03:03:08,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:03:08,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:08,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:03:08,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:08,940 INFO L87 Difference]: Start difference. First operand 206 states and 539 transitions. Second operand 4 states. [2020-11-28 03:03:09,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:09,050 INFO L93 Difference]: Finished difference Result 286 states and 791 transitions. [2020-11-28 03:03:09,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:03:09,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:03:09,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:09,053 INFO L225 Difference]: With dead ends: 286 [2020-11-28 03:03:09,054 INFO L226 Difference]: Without dead ends: 262 [2020-11-28 03:03:09,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-28 03:03:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 206. [2020-11-28 03:03:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-28 03:03:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 538 transitions. [2020-11-28 03:03:09,067 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 538 transitions. Word has length 11 [2020-11-28 03:03:09,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:09,067 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 538 transitions. [2020-11-28 03:03:09,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:03:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 538 transitions. [2020-11-28 03:03:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:03:09,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:09,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:09,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:03:09,070 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:03:09,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:09,070 INFO L82 PathProgramCache]: Analyzing trace with hash -818759249, now seen corresponding path program 1 times [2020-11-28 03:03:09,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:09,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590909246] [2020-11-28 03:03:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:03:09,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590909246] [2020-11-28 03:03:09,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:09,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:03:09,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192873833] [2020-11-28 03:03:09,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:03:09,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:09,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:03:09,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:09,142 INFO L87 Difference]: Start difference. First operand 206 states and 538 transitions. Second operand 4 states. [2020-11-28 03:03:09,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:09,231 INFO L93 Difference]: Finished difference Result 244 states and 723 transitions. [2020-11-28 03:03:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:03:09,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:03:09,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:09,237 INFO L225 Difference]: With dead ends: 244 [2020-11-28 03:03:09,237 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:03:09,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:09,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:03:09,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:03:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:03:09,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:03:09,238 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-11-28 03:03:09,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:09,238 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:03:09,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:03:09,239 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:03:09,239 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:03:09,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:03:09,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:03:09 BasicIcfg [2020-11-28 03:03:09,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:03:09,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:03:09,243 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:03:09,243 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:03:09,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:04" (3/4) ... [2020-11-28 03:03:09,250 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:03:09,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2020-11-28 03:03:09,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-11-28 03:03:09,264 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 03:03:09,265 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:03:09,265 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:03:09,266 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:03:09,298 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_76bca92f-6245-4b8a-af91-62a100c894d0/bin/uautomizer/witness.graphml [2020-11-28 03:03:09,298 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:03:09,300 INFO L168 Benchmark]: Toolchain (without parser) took 5759.38 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 53.1 MB in the beginning and 55.1 MB in the end (delta: -2.0 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:09,301 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:03:09,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.94 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 53.0 MB in the beginning and 67.5 MB in the end (delta: -14.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:09,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.19 ms. Allocated memory is still 111.1 MB. Free memory was 67.5 MB in the beginning and 65.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:09,302 INFO L168 Benchmark]: Boogie Preprocessor took 42.47 ms. Allocated memory is still 111.1 MB. Free memory was 65.5 MB in the beginning and 64.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:03:09,303 INFO L168 Benchmark]: RCFGBuilder took 597.57 ms. Allocated memory is still 111.1 MB. Free memory was 64.3 MB in the beginning and 40.3 MB in the end (delta: 24.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:09,303 INFO L168 Benchmark]: TraceAbstraction took 4408.29 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 39.7 MB in the beginning and 58.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:09,304 INFO L168 Benchmark]: Witness Printer took 56.17 ms. Allocated memory is still 134.2 MB. Free memory was 58.2 MB in the beginning and 55.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:09,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 597.94 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 53.0 MB in the beginning and 67.5 MB in the end (delta: -14.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.19 ms. Allocated memory is still 111.1 MB. Free memory was 67.5 MB in the beginning and 65.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.47 ms. Allocated memory is still 111.1 MB. Free memory was 65.5 MB in the beginning and 64.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 597.57 ms. Allocated memory is still 111.1 MB. Free memory was 64.3 MB in the beginning and 40.3 MB in the end (delta: 24.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4408.29 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 39.7 MB in the beginning and 58.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Witness Printer took 56.17 ms. Allocated memory is still 134.2 MB. Free memory was 58.2 MB in the beginning and 55.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1877 VarBasedMoverChecksPositive, 127 VarBasedMoverChecksNegative, 69 SemBasedMoverChecksPositive, 58 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 336 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 94 PlacesBefore, 43 PlacesAfterwards, 104 TransitionsBefore, 46 TransitionsAfterwards, 2580 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 20 ConcurrentYvCompositions, 7 ChoiceCompositions, 90 TotalNumberOfCompositions, 8505 MoverChecksTotal - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 211 SDtfs, 143 SDslu, 160 SDs, 0 SdLazy, 65 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=418occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 74 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 538 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...