./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe023_tso.opt.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_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/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 d3cc59967c9878975720f1b2e67b62ec3484487d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:57:29,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:29,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:30,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:30,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:30,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:30,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:30,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:30,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:30,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:30,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:30,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:30,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:30,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:30,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:30,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:30,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:30,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:30,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:30,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:30,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:30,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:30,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:30,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:30,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:30,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:30,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:30,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:30,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:30,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:30,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:30,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:30,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:30,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:30,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:30,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:30,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:30,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:30,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:30,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:30,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:30,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:30,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:30,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:30,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:30,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:30,158 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:30,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:30,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:30,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:30,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:30,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:30,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:30,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:30,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:30,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:30,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:30,161 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:30,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:30,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:30,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:30,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:30,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:30,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:30,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:30,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:30,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:30,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:30,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:30,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:30,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:30,164 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_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3cc59967c9878975720f1b2e67b62ec3484487d [2020-11-28 02:57:30,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:30,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:30,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:30,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:30,524 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:30,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i [2020-11-28 02:57:30,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer/data/af72b8f08/f053bdb87a28446cb03b84bc76cf9861/FLAG3491cfa15 [2020-11-28 02:57:31,286 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:31,287 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i [2020-11-28 02:57:31,305 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer/data/af72b8f08/f053bdb87a28446cb03b84bc76cf9861/FLAG3491cfa15 [2020-11-28 02:57:31,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer/data/af72b8f08/f053bdb87a28446cb03b84bc76cf9861 [2020-11-28 02:57:31,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:31,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:31,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:31,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:31,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:31,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@364538e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:31, skipping insertion in model container [2020-11-28 02:57:31,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:31" (1/1) ... [2020-11-28 02:57:31,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:31,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:32,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:32,072 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:32,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:32,194 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:32,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32 WrapperNode [2020-11-28 02:57:32,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:32,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:32,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:32,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:32,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:32,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:32,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:32,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:32,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... [2020-11-28 02:57:32,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:32,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:32,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:32,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:32,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/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 02:57:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:57:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 02:57:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:57:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 02:57:32,356 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 02:57:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 02:57:32,356 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 02:57:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 02:57:32,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 02:57:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 02:57:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:32,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:32,360 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 02:57:32,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:32,876 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 02:57:32,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:32 BoogieIcfgContainer [2020-11-28 02:57:32,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:32,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:32,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:32,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:32,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:31" (1/3) ... [2020-11-28 02:57:32,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e38958f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:32, skipping insertion in model container [2020-11-28 02:57:32,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:32" (2/3) ... [2020-11-28 02:57:32,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e38958f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:32, skipping insertion in model container [2020-11-28 02:57:32,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:32" (3/3) ... [2020-11-28 02:57:32,888 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-11-28 02:57:32,900 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 02:57:32,900 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:32,906 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:57:32,907 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 02:57:32,955 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,956 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,956 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,956 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,958 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,958 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,958 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,958 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,960 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,960 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,960 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,961 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,971 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,971 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,971 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,972 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,993 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,993 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,993 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,994 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:57:32,999 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 02:57:33,012 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 02:57:33,048 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:33,050 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:33,050 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:33,050 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:33,051 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:33,051 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:33,051 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:33,051 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:33,069 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 02:57:33,071 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 02:57:33,074 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 02:57:33,076 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 02:57:33,129 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 02:57:33,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 02:57:33,133 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 02:57:33,137 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 02:57:34,027 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-11-28 02:57:36,073 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-28 02:57:36,327 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-11-28 02:57:36,327 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-28 02:57:36,334 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-28 02:57:36,358 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-28 02:57:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-28 02:57:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:57:36,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:36,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:36,367 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:36,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-11-28 02:57:36,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:36,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563697062] [2020-11-28 02:57:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:36,648 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 02:57:36,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563697062] [2020-11-28 02:57:36,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:36,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:57:36,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200122935] [2020-11-28 02:57:36,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:36,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:36,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:36,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:36,674 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-28 02:57:36,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:36,740 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-11-28 02:57:36,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:36,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 02:57:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:36,768 INFO L225 Difference]: With dead ends: 266 [2020-11-28 02:57:36,769 INFO L226 Difference]: Without dead ends: 202 [2020-11-28 02:57:36,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 02:57:36,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-28 02:57:36,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-28 02:57:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-28 02:57:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-11-28 02:57:36,858 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-11-28 02:57:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:36,859 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-11-28 02:57:36,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-11-28 02:57:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:57:36,866 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:36,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:36,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:36,867 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:36,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:36,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1337858444, now seen corresponding path program 1 times [2020-11-28 02:57:36,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:36,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88064639] [2020-11-28 02:57:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:36,999 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 02:57:36,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88064639] [2020-11-28 02:57:36,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:36,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:57:37,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951699899] [2020-11-28 02:57:37,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:37,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:37,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:37,002 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-11-28 02:57:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,026 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-11-28 02:57:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:37,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 02:57:37,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,032 INFO L225 Difference]: With dead ends: 194 [2020-11-28 02:57:37,032 INFO L226 Difference]: Without dead ends: 194 [2020-11-28 02:57:37,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 02:57:37,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-28 02:57:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-28 02:57:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-28 02:57:37,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-11-28 02:57:37,052 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-11-28 02:57:37,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,053 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-11-28 02:57:37,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:37,053 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-11-28 02:57:37,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:57:37,061 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:37,062 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1476092281, now seen corresponding path program 1 times [2020-11-28 02:57:37,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063991355] [2020-11-28 02:57:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,176 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 02:57:37,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063991355] [2020-11-28 02:57:37,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:37,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394612712] [2020-11-28 02:57:37,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:37,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:37,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:37,179 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-11-28 02:57:37,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,210 INFO L93 Difference]: Finished difference Result 230 states and 596 transitions. [2020-11-28 02:57:37,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:37,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:57:37,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,224 INFO L225 Difference]: With dead ends: 230 [2020-11-28 02:57:37,224 INFO L226 Difference]: Without dead ends: 134 [2020-11-28 02:57:37,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 02:57:37,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-28 02:57:37,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-11-28 02:57:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-28 02:57:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-11-28 02:57:37,238 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 11 [2020-11-28 02:57:37,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,239 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-11-28 02:57:37,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:37,239 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-11-28 02:57:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:57:37,242 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:57:37,242 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1054826072, now seen corresponding path program 1 times [2020-11-28 02:57:37,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498356367] [2020-11-28 02:57:37,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,316 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 02:57:37,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498356367] [2020-11-28 02:57:37,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:37,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021859111] [2020-11-28 02:57:37,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:37,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:37,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:37,319 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 3 states. [2020-11-28 02:57:37,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,346 INFO L93 Difference]: Finished difference Result 206 states and 495 transitions. [2020-11-28 02:57:37,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:37,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-28 02:57:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,348 INFO L225 Difference]: With dead ends: 206 [2020-11-28 02:57:37,348 INFO L226 Difference]: Without dead ends: 110 [2020-11-28 02:57:37,349 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 02:57:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-28 02:57:37,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-11-28 02:57:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-28 02:57:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-11-28 02:57:37,365 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 13 [2020-11-28 02:57:37,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,365 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-11-28 02:57:37,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-11-28 02:57:37,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:57:37,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:57:37,366 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1395741464, now seen corresponding path program 2 times [2020-11-28 02:57:37,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646564999] [2020-11-28 02:57:37,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,431 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 02:57:37,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646564999] [2020-11-28 02:57:37,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:37,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461650912] [2020-11-28 02:57:37,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:37,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:37,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:37,433 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-11-28 02:57:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,469 INFO L93 Difference]: Finished difference Result 158 states and 361 transitions. [2020-11-28 02:57:37,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:37,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 02:57:37,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,472 INFO L225 Difference]: With dead ends: 158 [2020-11-28 02:57:37,472 INFO L226 Difference]: Without dead ends: 86 [2020-11-28 02:57:37,472 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 02:57:37,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-28 02:57:37,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-28 02:57:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-28 02:57:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-11-28 02:57:37,478 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 13 [2020-11-28 02:57:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,478 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-11-28 02:57:37,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-11-28 02:57:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:57:37,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:57:37,480 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,480 INFO L82 PathProgramCache]: Analyzing trace with hash -698343546, now seen corresponding path program 3 times [2020-11-28 02:57:37,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665379571] [2020-11-28 02:57:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,588 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 02:57:37,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665379571] [2020-11-28 02:57:37,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:37,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402594793] [2020-11-28 02:57:37,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:37,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:37,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:37,590 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 4 states. [2020-11-28 02:57:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,635 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-11-28 02:57:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:37,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 02:57:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,636 INFO L225 Difference]: With dead ends: 99 [2020-11-28 02:57:37,636 INFO L226 Difference]: Without dead ends: 77 [2020-11-28 02:57:37,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 02:57:37,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-28 02:57:37,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-28 02:57:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-28 02:57:37,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 156 transitions. [2020-11-28 02:57:37,642 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 156 transitions. Word has length 13 [2020-11-28 02:57:37,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,642 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 156 transitions. [2020-11-28 02:57:37,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:37,642 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 156 transitions. [2020-11-28 02:57:37,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:57:37,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:57:37,643 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1795509398, now seen corresponding path program 1 times [2020-11-28 02:57:37,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792786507] [2020-11-28 02:57:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,737 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 02:57:37,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792786507] [2020-11-28 02:57:37,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:37,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463491557] [2020-11-28 02:57:37,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:37,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:37,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:37,739 INFO L87 Difference]: Start difference. First operand 77 states and 156 transitions. Second operand 5 states. [2020-11-28 02:57:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,803 INFO L93 Difference]: Finished difference Result 78 states and 146 transitions. [2020-11-28 02:57:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:37,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 02:57:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,804 INFO L225 Difference]: With dead ends: 78 [2020-11-28 02:57:37,804 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 02:57:37,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:37,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 02:57:37,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-28 02:57:37,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-28 02:57:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-11-28 02:57:37,809 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 14 [2020-11-28 02:57:37,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,809 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-11-28 02:57:37,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-11-28 02:57:37,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:57:37,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:57:37,810 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:37,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,811 INFO L82 PathProgramCache]: Analyzing trace with hash 213970275, now seen corresponding path program 1 times [2020-11-28 02:57:37,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018435342] [2020-11-28 02:57:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,904 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 02:57:37,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018435342] [2020-11-28 02:57:37,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:37,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806753128] [2020-11-28 02:57:37,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:37,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:37,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:37,907 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 6 states. [2020-11-28 02:57:37,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,996 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-11-28 02:57:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:57:37,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 02:57:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,997 INFO L225 Difference]: With dead ends: 60 [2020-11-28 02:57:37,997 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 02:57:37,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 02:57:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-28 02:57:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 02:57:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-28 02:57:38,001 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-11-28 02:57:38,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:38,001 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-28 02:57:38,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-28 02:57:38,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:57:38,002 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:38,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:38,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:57:38,003 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:38,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:38,003 INFO L82 PathProgramCache]: Analyzing trace with hash -534648938, now seen corresponding path program 1 times [2020-11-28 02:57:38,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:38,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356122026] [2020-11-28 02:57:38,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:38,044 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 02:57:38,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356122026] [2020-11-28 02:57:38,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:38,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:38,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129154502] [2020-11-28 02:57:38,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:38,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:38,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:38,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:38,047 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-11-28 02:57:38,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:38,069 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-11-28 02:57:38,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:38,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 02:57:38,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:38,069 INFO L225 Difference]: With dead ends: 53 [2020-11-28 02:57:38,069 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:57:38,070 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 02:57:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:57:38,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:57:38,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:57:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:57:38,070 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-28 02:57:38,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:38,071 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:38,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:38,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:57:38,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:57:38,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:38 BasicIcfg [2020-11-28 02:57:38,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:38,074 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:38,074 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:38,074 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:38,075 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:32" (3/4) ... [2020-11-28 02:57:38,078 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:57:38,084 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 02:57:38,084 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 02:57:38,084 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 02:57:38,089 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 02:57:38,089 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:57:38,089 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:38,090 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:38,127 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dda8a514-2f09-4cde-8b1b-c6f4d4510dc9/bin/uautomizer/witness.graphml [2020-11-28 02:57:38,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:38,128 INFO L168 Benchmark]: Toolchain (without parser) took 6546.90 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 73.6 MB in the beginning and 97.9 MB in the end (delta: -24.3 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:38,129 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory is still 35.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:38,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.01 ms. Allocated memory is still 107.0 MB. Free memory was 73.4 MB in the beginning and 62.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:38,130 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.68 ms. Allocated memory is still 107.0 MB. Free memory was 62.7 MB in the beginning and 60.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:38,130 INFO L168 Benchmark]: Boogie Preprocessor took 27.10 ms. Allocated memory is still 107.0 MB. Free memory was 60.7 MB in the beginning and 59.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:38,131 INFO L168 Benchmark]: RCFGBuilder took 608.41 ms. Allocated memory is still 107.0 MB. Free memory was 59.6 MB in the beginning and 81.5 MB in the end (delta: -21.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:38,131 INFO L168 Benchmark]: TraceAbstraction took 5194.11 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 80.8 MB in the beginning and 101.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:38,132 INFO L168 Benchmark]: Witness Printer took 52.80 ms. Allocated memory is still 163.6 MB. Free memory was 101.0 MB in the beginning and 97.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:38,135 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory is still 35.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 598.01 ms. Allocated memory is still 107.0 MB. Free memory was 73.4 MB in the beginning and 62.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.68 ms. Allocated memory is still 107.0 MB. Free memory was 62.7 MB in the beginning and 60.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.10 ms. Allocated memory is still 107.0 MB. Free memory was 60.7 MB in the beginning and 59.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 608.41 ms. Allocated memory is still 107.0 MB. Free memory was 59.6 MB in the beginning and 81.5 MB in the end (delta: -21.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5194.11 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 80.8 MB in the beginning and 101.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.1 GB. * Witness Printer took 52.80 ms. Allocated memory is still 163.6 MB. Free memory was 101.0 MB in the beginning and 97.9 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 1039 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 89 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 173 SDtfs, 133 SDslu, 184 SDs, 0 SdLazy, 113 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 3437 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...