./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_pso.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_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/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 e9b1c96eed0367583bf25a0e47ad0463a90fc1bd ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:19:29,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:19:29,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:19:29,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:19:29,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:19:29,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:19:29,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:19:29,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:19:29,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:19:29,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:19:29,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:19:29,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:19:29,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:19:29,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:19:29,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:19:29,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:19:29,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:19:29,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:19:29,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:19:29,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:19:29,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:19:29,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:19:29,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:19:29,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:19:30,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:19:30,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:19:30,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:19:30,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:19:30,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:19:30,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:19:30,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:19:30,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:19:30,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:19:30,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:19:30,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:19:30,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:19:30,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:19:30,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:19:30,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:19:30,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:19:30,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:19:30,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:19:30,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:19:30,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:19:30,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:19:30,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:19:30,042 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:19:30,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:19:30,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:19:30,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:19:30,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:19:30,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:19:30,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:19:30,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:19:30,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:19:30,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:19:30,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:19:30,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:19:30,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:19:30,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:19:30,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:19:30,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:19:30,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:19:30,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:19:30,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:19:30,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:19:30,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:19:30,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:19:30,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:19:30,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:19:30,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:19:30,047 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_efdb8327-2cee-4768-bf67-946de2d49247/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9b1c96eed0367583bf25a0e47ad0463a90fc1bd [2020-11-30 00:19:30,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:19:30,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:19:30,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:19:30,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:19:30,338 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:19:30,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2020-11-30 00:19:30,452 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer/data/03d1495d0/ed6d66f941e143639a891116e4c4bb7d/FLAGe556e1668 [2020-11-30 00:19:31,003 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:19:31,004 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2020-11-30 00:19:31,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer/data/03d1495d0/ed6d66f941e143639a891116e4c4bb7d/FLAGe556e1668 [2020-11-30 00:19:31,263 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer/data/03d1495d0/ed6d66f941e143639a891116e4c4bb7d [2020-11-30 00:19:31,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:19:31,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:19:31,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:19:31,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:19:31,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:19:31,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:19:31" (1/1) ... [2020-11-30 00:19:31,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a726025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31, skipping insertion in model container [2020-11-30 00:19:31,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:19:31" (1/1) ... [2020-11-30 00:19:31,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:19:31,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:19:31,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:19:31,724 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:19:31,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:19:31,845 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:19:31,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31 WrapperNode [2020-11-30 00:19:31,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:19:31,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:19:31,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:19:31,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:19:31,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31" (1/1) ... [2020-11-30 00:19:31,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31" (1/1) ... [2020-11-30 00:19:31,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:19:31,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:19:31,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:19:31,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:19:31,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31" (1/1) ... [2020-11-30 00:19:31,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31" (1/1) ... [2020-11-30 00:19:31,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31" (1/1) ... [2020-11-30 00:19:31,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31" (1/1) ... [2020-11-30 00:19:31,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31" (1/1) ... [2020-11-30 00:19:31,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31" (1/1) ... [2020-11-30 00:19:31,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31" (1/1) ... [2020-11-30 00:19:31,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:19:31,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:19:31,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:19:31,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:19:31,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/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 [2020-11-30 00:19:32,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:19:32,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-30 00:19:32,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:19:32,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:19:32,040 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-30 00:19:32,040 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-30 00:19:32,040 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-30 00:19:32,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-30 00:19:32,041 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-30 00:19:32,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-30 00:19:32,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:19:32,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-30 00:19:32,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:19:32,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:19:32,044 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 00:19:32,554 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:19:32,554 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 00:19:32,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:19:32 BoogieIcfgContainer [2020-11-30 00:19:32,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:19:32,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:19:32,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:19:32,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:19:32,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:19:31" (1/3) ... [2020-11-30 00:19:32,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7b5db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:19:32, skipping insertion in model container [2020-11-30 00:19:32,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:31" (2/3) ... [2020-11-30 00:19:32,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7b5db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:19:32, skipping insertion in model container [2020-11-30 00:19:32,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:19:32" (3/3) ... [2020-11-30 00:19:32,566 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-11-30 00:19:32,577 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 00:19:32,578 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:19:32,583 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:19:32,584 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 00:19:32,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,609 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,610 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,611 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,612 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,613 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,613 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,613 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,613 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,614 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,614 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,616 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,617 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,617 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,617 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,625 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,627 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,627 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,627 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,627 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:19:32,634 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-30 00:19:32,646 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 00:19:32,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:19:32,690 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:19:32,691 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:19:32,692 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:19:32,692 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:19:32,692 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:19:32,692 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:19:32,692 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:19:32,711 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 00:19:32,713 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-30 00:19:32,716 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-30 00:19:32,718 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-30 00:19:32,797 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-30 00:19:32,797 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-30 00:19:32,803 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-30 00:19:32,808 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-30 00:19:35,270 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-11-30 00:19:35,441 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-30 00:19:35,562 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-30 00:19:36,011 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-30 00:19:36,108 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-11-30 00:19:36,108 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-11-30 00:19:36,113 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-30 00:19:36,135 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-30 00:19:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-30 00:19:36,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:19:36,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:36,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:36,145 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:36,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:36,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-11-30 00:19:36,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:36,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397982511] [2020-11-30 00:19:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:36,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397982511] [2020-11-30 00:19:36,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:36,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 00:19:36,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210328868] [2020-11-30 00:19:36,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:19:36,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:36,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:19:36,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:19:36,455 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-30 00:19:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:36,576 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-30 00:19:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:19:36,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-30 00:19:36,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:36,609 INFO L225 Difference]: With dead ends: 282 [2020-11-30 00:19:36,609 INFO L226 Difference]: Without dead ends: 218 [2020-11-30 00:19:36,610 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 [2020-11-30 00:19:36,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-30 00:19:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-30 00:19:36,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-30 00:19:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-30 00:19:36,717 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-30 00:19:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:36,719 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-30 00:19:36,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:19:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-30 00:19:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:19:36,726 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:36,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:36,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:19:36,727 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:36,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:36,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1771488223, now seen corresponding path program 1 times [2020-11-30 00:19:36,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:36,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504390779] [2020-11-30 00:19:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:36,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504390779] [2020-11-30 00:19:36,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:36,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:19:36,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266040076] [2020-11-30 00:19:36,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:19:36,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:36,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:19:36,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:19:36,896 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-11-30 00:19:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:36,926 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-11-30 00:19:36,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:19:36,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-30 00:19:36,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:36,934 INFO L225 Difference]: With dead ends: 202 [2020-11-30 00:19:36,934 INFO L226 Difference]: Without dead ends: 202 [2020-11-30 00:19:36,935 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 [2020-11-30 00:19:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-30 00:19:36,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-30 00:19:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-30 00:19:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-11-30 00:19:36,957 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-11-30 00:19:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:36,957 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-11-30 00:19:36,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:19:36,958 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-11-30 00:19:36,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:19:36,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:36,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:36,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:19:36,960 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:36,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:36,961 INFO L82 PathProgramCache]: Analyzing trace with hash -918442191, now seen corresponding path program 1 times [2020-11-30 00:19:36,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:36,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384179254] [2020-11-30 00:19:36,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:37,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384179254] [2020-11-30 00:19:37,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:37,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 00:19:37,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725420504] [2020-11-30 00:19:37,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:19:37,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:37,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:19:37,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:19:37,013 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-11-30 00:19:37,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:37,023 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-11-30 00:19:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:19:37,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-30 00:19:37,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:37,027 INFO L225 Difference]: With dead ends: 198 [2020-11-30 00:19:37,027 INFO L226 Difference]: Without dead ends: 198 [2020-11-30 00:19:37,028 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 [2020-11-30 00:19:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-30 00:19:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-11-30 00:19:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-30 00:19:37,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-11-30 00:19:37,045 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-11-30 00:19:37,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:37,046 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-11-30 00:19:37,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:19:37,046 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-11-30 00:19:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:19:37,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:37,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:37,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:19:37,049 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:37,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061887, now seen corresponding path program 1 times [2020-11-30 00:19:37,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:37,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136792694] [2020-11-30 00:19:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:37,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136792694] [2020-11-30 00:19:37,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:37,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 00:19:37,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710627515] [2020-11-30 00:19:37,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:19:37,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:37,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:19:37,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:19:37,146 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-11-30 00:19:37,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:37,159 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-11-30 00:19:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:19:37,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-30 00:19:37,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:37,162 INFO L225 Difference]: With dead ends: 192 [2020-11-30 00:19:37,162 INFO L226 Difference]: Without dead ends: 192 [2020-11-30 00:19:37,163 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 [2020-11-30 00:19:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-30 00:19:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-11-30 00:19:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-11-30 00:19:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-11-30 00:19:37,189 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-11-30 00:19:37,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:37,191 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-11-30 00:19:37,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:19:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-11-30 00:19:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:19:37,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:37,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:37,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:19:37,193 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:37,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:37,194 INFO L82 PathProgramCache]: Analyzing trace with hash 2114610558, now seen corresponding path program 1 times [2020-11-30 00:19:37,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:37,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921118766] [2020-11-30 00:19:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:37,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921118766] [2020-11-30 00:19:37,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:37,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:19:37,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939908110] [2020-11-30 00:19:37,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:19:37,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:37,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:19:37,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:19:37,275 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 3 states. [2020-11-30 00:19:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:37,298 INFO L93 Difference]: Finished difference Result 248 states and 635 transitions. [2020-11-30 00:19:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:19:37,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-30 00:19:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:37,301 INFO L225 Difference]: With dead ends: 248 [2020-11-30 00:19:37,301 INFO L226 Difference]: Without dead ends: 200 [2020-11-30 00:19:37,301 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 [2020-11-30 00:19:37,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-30 00:19:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2020-11-30 00:19:37,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-30 00:19:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 475 transitions. [2020-11-30 00:19:37,317 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 475 transitions. Word has length 12 [2020-11-30 00:19:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:37,318 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 475 transitions. [2020-11-30 00:19:37,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:19:37,318 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 475 transitions. [2020-11-30 00:19:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:19:37,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:37,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:37,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:19:37,325 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:37,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:37,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2115787814, now seen corresponding path program 1 times [2020-11-30 00:19:37,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:37,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679788999] [2020-11-30 00:19:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:37,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679788999] [2020-11-30 00:19:37,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:37,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:19:37,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262532118] [2020-11-30 00:19:37,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:19:37,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:37,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:19:37,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:19:37,415 INFO L87 Difference]: Start difference. First operand 188 states and 475 transitions. Second operand 4 states. [2020-11-30 00:19:37,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:37,447 INFO L93 Difference]: Finished difference Result 260 states and 643 transitions. [2020-11-30 00:19:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:19:37,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 00:19:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:37,450 INFO L225 Difference]: With dead ends: 260 [2020-11-30 00:19:37,450 INFO L226 Difference]: Without dead ends: 188 [2020-11-30 00:19:37,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:19:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-11-30 00:19:37,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-11-30 00:19:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-30 00:19:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 467 transitions. [2020-11-30 00:19:37,458 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 467 transitions. Word has length 12 [2020-11-30 00:19:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:37,458 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 467 transitions. [2020-11-30 00:19:37,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:19:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 467 transitions. [2020-11-30 00:19:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:19:37,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:37,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:37,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:19:37,460 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:37,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:37,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 2 times [2020-11-30 00:19:37,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:37,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344342446] [2020-11-30 00:19:37,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:37,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344342446] [2020-11-30 00:19:37,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:37,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:19:37,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921932281] [2020-11-30 00:19:37,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:19:37,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:37,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:19:37,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:19:37,530 INFO L87 Difference]: Start difference. First operand 188 states and 467 transitions. Second operand 4 states. [2020-11-30 00:19:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:37,576 INFO L93 Difference]: Finished difference Result 221 states and 507 transitions. [2020-11-30 00:19:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:19:37,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 00:19:37,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:37,578 INFO L225 Difference]: With dead ends: 221 [2020-11-30 00:19:37,578 INFO L226 Difference]: Without dead ends: 157 [2020-11-30 00:19:37,579 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 [2020-11-30 00:19:37,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-30 00:19:37,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-11-30 00:19:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-30 00:19:37,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 352 transitions. [2020-11-30 00:19:37,584 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 352 transitions. Word has length 12 [2020-11-30 00:19:37,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:37,585 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 352 transitions. [2020-11-30 00:19:37,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:19:37,585 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 352 transitions. [2020-11-30 00:19:37,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:19:37,586 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:37,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:37,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:19:37,587 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:37,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:37,587 INFO L82 PathProgramCache]: Analyzing trace with hash 596662620, now seen corresponding path program 1 times [2020-11-30 00:19:37,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:37,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90551139] [2020-11-30 00:19:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:37,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90551139] [2020-11-30 00:19:37,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:37,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:19:37,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544901993] [2020-11-30 00:19:37,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:19:37,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:37,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:19:37,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:19:37,672 INFO L87 Difference]: Start difference. First operand 157 states and 352 transitions. Second operand 5 states. [2020-11-30 00:19:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:37,727 INFO L93 Difference]: Finished difference Result 159 states and 336 transitions. [2020-11-30 00:19:37,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:19:37,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-30 00:19:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:37,731 INFO L225 Difference]: With dead ends: 159 [2020-11-30 00:19:37,731 INFO L226 Difference]: Without dead ends: 122 [2020-11-30 00:19:37,731 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 [2020-11-30 00:19:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-30 00:19:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-11-30 00:19:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-30 00:19:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 253 transitions. [2020-11-30 00:19:37,766 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 253 transitions. Word has length 13 [2020-11-30 00:19:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:37,766 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 253 transitions. [2020-11-30 00:19:37,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:19:37,766 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 253 transitions. [2020-11-30 00:19:37,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:19:37,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:37,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:37,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:19:37,767 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:37,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:37,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-11-30 00:19:37,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:37,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860702537] [2020-11-30 00:19:37,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:37,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860702537] [2020-11-30 00:19:37,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:37,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:19:37,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135193372] [2020-11-30 00:19:37,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:19:37,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:37,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:19:37,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:19:37,887 INFO L87 Difference]: Start difference. First operand 122 states and 253 transitions. Second operand 6 states. [2020-11-30 00:19:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:37,970 INFO L93 Difference]: Finished difference Result 118 states and 243 transitions. [2020-11-30 00:19:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:19:37,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 00:19:37,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:37,972 INFO L225 Difference]: With dead ends: 118 [2020-11-30 00:19:37,972 INFO L226 Difference]: Without dead ends: 54 [2020-11-30 00:19:37,973 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 [2020-11-30 00:19:37,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-30 00:19:37,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-30 00:19:37,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 00:19:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-11-30 00:19:37,975 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-11-30 00:19:37,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:37,975 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-11-30 00:19:37,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:19:37,976 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-11-30 00:19:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:19:37,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:37,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:37,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:19:37,977 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:37,977 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-11-30 00:19:37,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:37,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049566741] [2020-11-30 00:19:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:38,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049566741] [2020-11-30 00:19:38,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:38,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:19:38,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281491106] [2020-11-30 00:19:38,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:19:38,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:38,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:19:38,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:19:38,038 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-11-30 00:19:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:38,085 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-11-30 00:19:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:19:38,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 00:19:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:38,087 INFO L225 Difference]: With dead ends: 63 [2020-11-30 00:19:38,087 INFO L226 Difference]: Without dead ends: 35 [2020-11-30 00:19:38,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:19:38,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-30 00:19:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-30 00:19:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 00:19:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-11-30 00:19:38,089 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-11-30 00:19:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:38,089 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-11-30 00:19:38,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:19:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-11-30 00:19:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:19:38,090 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:38,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:38,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:19:38,090 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:38,091 INFO L82 PathProgramCache]: Analyzing trace with hash -281731452, now seen corresponding path program 2 times [2020-11-30 00:19:38,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:38,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295978481] [2020-11-30 00:19:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:38,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295978481] [2020-11-30 00:19:38,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:38,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:19:38,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272996896] [2020-11-30 00:19:38,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:19:38,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:38,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:19:38,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:19:38,171 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-11-30 00:19:38,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:38,211 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-11-30 00:19:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:19:38,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 00:19:38,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:38,212 INFO L225 Difference]: With dead ends: 34 [2020-11-30 00:19:38,212 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:19:38,212 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 [2020-11-30 00:19:38,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:19:38,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:19:38,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:19:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:19:38,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-30 00:19:38,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:38,213 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:19:38,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:19:38,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:19:38,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:19:38,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 00:19:38,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:19:38 BasicIcfg [2020-11-30 00:19:38,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:19:38,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:19:38,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:19:38,217 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:19:38,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:19:32" (3/4) ... [2020-11-30 00:19:38,219 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:19:38,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-30 00:19:38,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-30 00:19:38,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-30 00:19:38,229 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 00:19:38,229 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:19:38,229 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:19:38,229 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:19:38,279 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_efdb8327-2cee-4768-bf67-946de2d49247/bin/uautomizer/witness.graphml [2020-11-30 00:19:38,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:19:38,281 INFO L168 Benchmark]: Toolchain (without parser) took 7013.53 ms. Allocated memory was 102.8 MB in the beginning and 155.2 MB in the end (delta: 52.4 MB). Free memory was 69.3 MB in the beginning and 89.4 MB in the end (delta: -20.1 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:38,282 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:19:38,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.67 ms. Allocated memory is still 102.8 MB. Free memory was 69.1 MB in the beginning and 59.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:38,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.28 ms. Allocated memory is still 102.8 MB. Free memory was 59.0 MB in the beginning and 57.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:38,283 INFO L168 Benchmark]: Boogie Preprocessor took 30.69 ms. Allocated memory is still 102.8 MB. Free memory was 57.0 MB in the beginning and 55.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:19:38,287 INFO L168 Benchmark]: RCFGBuilder took 626.60 ms. Allocated memory is still 102.8 MB. Free memory was 55.5 MB in the beginning and 75.9 MB in the end (delta: -20.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:38,288 INFO L168 Benchmark]: TraceAbstraction took 5657.44 ms. Allocated memory was 102.8 MB in the beginning and 155.2 MB in the end (delta: 52.4 MB). Free memory was 75.2 MB in the beginning and 92.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:38,289 INFO L168 Benchmark]: Witness Printer took 63.31 ms. Allocated memory is still 155.2 MB. Free memory was 92.6 MB in the beginning and 89.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:38,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 577.67 ms. Allocated memory is still 102.8 MB. Free memory was 69.1 MB in the beginning and 59.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.28 ms. Allocated memory is still 102.8 MB. Free memory was 59.0 MB in the beginning and 57.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.69 ms. Allocated memory is still 102.8 MB. Free memory was 57.0 MB in the beginning and 55.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 626.60 ms. Allocated memory is still 102.8 MB. Free memory was 55.5 MB in the beginning and 75.9 MB in the end (delta: -20.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5657.44 ms. Allocated memory was 102.8 MB in the beginning and 155.2 MB in the end (delta: 52.4 MB). Free memory was 75.2 MB in the beginning and 92.6 MB in the end (delta: -17.4 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. * Witness Printer took 63.31 ms. Allocated memory is still 155.2 MB. Free memory was 92.6 MB in the beginning and 89.4 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 891 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 55 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 220 SDtfs, 143 SDslu, 240 SDs, 0 SdLazy, 133 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 4359 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...