./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.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_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/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 75b6321658285c0e5c05d59d7bf40c5ba47b7cd7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:18:50,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:18:50,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:18:51,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:18:51,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:18:51,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:18:51,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:18:51,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:18:51,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:18:51,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:18:51,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:18:51,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:18:51,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:18:51,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:18:51,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:18:51,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:18:51,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:18:51,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:18:51,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:18:51,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:18:51,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:18:51,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:18:51,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:18:51,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:18:51,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:18:51,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:18:51,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:18:51,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:18:51,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:18:51,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:18:51,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:18:51,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:18:51,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:18:51,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:18:51,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:18:51,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:18:51,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:18:51,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:18:51,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:18:51,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:18:51,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:18:51,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:18:51,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:18:51,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:18:51,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:18:51,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:18:51,112 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:18:51,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:18:51,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:18:51,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:18:51,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:18:51,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:18:51,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:18:51,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:18:51,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:18:51,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:18:51,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:18:51,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:18:51,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:18:51,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:18:51,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:18:51,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:18:51,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:18:51,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:18:51,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:18:51,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:18:51,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:18:51,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:18:51,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:18:51,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:18:51,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:18:51,119 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_7352e562-eb1a-4183-b567-35e98d855e66/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b6321658285c0e5c05d59d7bf40c5ba47b7cd7 [2020-11-28 03:18:51,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:18:51,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:18:51,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:18:51,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:18:51,429 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:18:51,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i [2020-11-28 03:18:51,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/data/81dc91731/909219eeb5aa470294368d2877df9170/FLAGaf24ab1a7 [2020-11-28 03:18:52,088 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:18:52,089 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/sv-benchmarks/c/pthread-wmm/safe001_tso.oepc.i [2020-11-28 03:18:52,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/data/81dc91731/909219eeb5aa470294368d2877df9170/FLAGaf24ab1a7 [2020-11-28 03:18:52,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/data/81dc91731/909219eeb5aa470294368d2877df9170 [2020-11-28 03:18:52,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:18:52,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:18:52,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:52,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:18:52,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:18:52,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:52" (1/1) ... [2020-11-28 03:18:52,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de85bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52, skipping insertion in model container [2020-11-28 03:18:52,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:52" (1/1) ... [2020-11-28 03:18:52,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:18:52,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:18:52,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:52,854 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:18:52,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:52,975 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:18:52,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52 WrapperNode [2020-11-28 03:18:52,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:52,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:52,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:18:52,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:18:52,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52" (1/1) ... [2020-11-28 03:18:53,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52" (1/1) ... [2020-11-28 03:18:53,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:53,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:18:53,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:18:53,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:18:53,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52" (1/1) ... [2020-11-28 03:18:53,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52" (1/1) ... [2020-11-28 03:18:53,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52" (1/1) ... [2020-11-28 03:18:53,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52" (1/1) ... [2020-11-28 03:18:53,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52" (1/1) ... [2020-11-28 03:18:53,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52" (1/1) ... [2020-11-28 03:18:53,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52" (1/1) ... [2020-11-28 03:18:53,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:18:53,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:18:53,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:18:53,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:18:53,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:18:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:18:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:18:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:18:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:18:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:18:53,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:18:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:18:53,163 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:18:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 03:18:53,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 03:18:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:18:53,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:18:53,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:18:53,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:18:53,167 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 03:18:53,594 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:18:53,594 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:18:53,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:53 BoogieIcfgContainer [2020-11-28 03:18:53,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:18:53,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:18:53,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:18:53,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:18:53,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:18:52" (1/3) ... [2020-11-28 03:18:53,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c92b19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:53, skipping insertion in model container [2020-11-28 03:18:53,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:52" (2/3) ... [2020-11-28 03:18:53,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c92b19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:53, skipping insertion in model container [2020-11-28 03:18:53,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:53" (3/3) ... [2020-11-28 03:18:53,605 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-11-28 03:18:53,617 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:18:53,618 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:18:53,623 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:18:53,624 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:18:53,650 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,650 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,650 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,651 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,651 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,651 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,652 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,652 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,653 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,653 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,654 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,654 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,654 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,654 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,657 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,658 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,658 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,666 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,670 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:18:53,672 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:18:53,685 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:18:53,706 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:18:53,707 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:18:53,707 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:18:53,707 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:18:53,707 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:18:53,707 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:18:53,707 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:18:53,708 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:18:53,720 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:18:53,722 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 03:18:53,725 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 03:18:53,727 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-28 03:18:53,772 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-28 03:18:53,772 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:18:53,776 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 65 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. [2020-11-28 03:18:53,779 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 03:18:55,530 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-28 03:18:56,102 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-28 03:18:56,214 INFO L131 LiptonReduction]: Checked pairs total: 3163 [2020-11-28 03:18:56,215 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-28 03:18:56,219 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 03:18:56,250 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 03:18:56,252 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 03:18:56,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:18:56,259 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:56,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:56,260 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:56,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:56,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2115134997, now seen corresponding path program 1 times [2020-11-28 03:18:56,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:56,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830038124] [2020-11-28 03:18:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:56,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830038124] [2020-11-28 03:18:56,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:56,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:18:56,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788777791] [2020-11-28 03:18:56,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:18:56,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:56,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:18:56,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:18:56,473 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 03:18:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:56,507 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 03:18:56,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:18:56,508 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:18:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:56,526 INFO L225 Difference]: With dead ends: 362 [2020-11-28 03:18:56,526 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 03:18:56,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:18:56,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 03:18:56,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 03:18:56,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 03:18:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 03:18:56,621 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 03:18:56,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:56,622 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 03:18:56,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:18:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 03:18:56,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:18:56,624 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:56,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:56,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:18:56,625 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:56,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:56,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1144664430, now seen corresponding path program 1 times [2020-11-28 03:18:56,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:56,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142242024] [2020-11-28 03:18:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:56,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142242024] [2020-11-28 03:18:56,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:56,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:18:56,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797676725] [2020-11-28 03:18:56,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:18:56,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:56,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:18:56,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:18:56,731 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-28 03:18:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:56,761 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-28 03:18:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:18:56,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 03:18:56,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:56,767 INFO L225 Difference]: With dead ends: 217 [2020-11-28 03:18:56,767 INFO L226 Difference]: Without dead ends: 217 [2020-11-28 03:18:56,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:18:56,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-28 03:18:56,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-28 03:18:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-28 03:18:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-28 03:18:56,797 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-28 03:18:56,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:56,798 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-28 03:18:56,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:18:56,798 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-28 03:18:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:18:56,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:56,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:56,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:18:56,800 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:56,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:56,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1523104206, now seen corresponding path program 1 times [2020-11-28 03:18:56,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:56,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627299728] [2020-11-28 03:18:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:56,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627299728] [2020-11-28 03:18:56,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:56,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:18:56,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234667278] [2020-11-28 03:18:56,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:18:56,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:56,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:18:56,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:18:56,946 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-11-28 03:18:56,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:56,980 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-28 03:18:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:18:56,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:18:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:56,983 INFO L225 Difference]: With dead ends: 136 [2020-11-28 03:18:56,984 INFO L226 Difference]: Without dead ends: 136 [2020-11-28 03:18:56,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:18:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-28 03:18:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-28 03:18:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-28 03:18:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-28 03:18:57,000 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-28 03:18:57,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:57,000 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-28 03:18:57,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:18:57,001 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-28 03:18:57,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:18:57,006 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:57,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:57,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:18:57,007 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:57,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1616090199, now seen corresponding path program 1 times [2020-11-28 03:18:57,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:57,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889808575] [2020-11-28 03:18:57,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:57,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889808575] [2020-11-28 03:18:57,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:57,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:18:57,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828838364] [2020-11-28 03:18:57,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:18:57,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:57,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:18:57,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:18:57,112 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-11-28 03:18:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:57,143 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-28 03:18:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:18:57,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 03:18:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:57,145 INFO L225 Difference]: With dead ends: 109 [2020-11-28 03:18:57,145 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 03:18:57,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:18:57,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 03:18:57,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-28 03:18:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 03:18:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-28 03:18:57,151 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-28 03:18:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:57,151 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-28 03:18:57,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:18:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-28 03:18:57,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:18:57,153 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:57,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:57,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:18:57,154 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:57,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:57,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1930604432, now seen corresponding path program 1 times [2020-11-28 03:18:57,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:57,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705711760] [2020-11-28 03:18:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:57,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705711760] [2020-11-28 03:18:57,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:57,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:18:57,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249726011] [2020-11-28 03:18:57,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:18:57,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:57,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:18:57,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:18:57,291 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-11-28 03:18:57,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:57,340 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-28 03:18:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:18:57,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:18:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:57,342 INFO L225 Difference]: With dead ends: 135 [2020-11-28 03:18:57,342 INFO L226 Difference]: Without dead ends: 85 [2020-11-28 03:18:57,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:18:57,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-28 03:18:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-28 03:18:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 03:18:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-11-28 03:18:57,347 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 18 [2020-11-28 03:18:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:57,347 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-11-28 03:18:57,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:18:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-11-28 03:18:57,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:18:57,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:57,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:57,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:18:57,349 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:57,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:57,349 INFO L82 PathProgramCache]: Analyzing trace with hash 129745538, now seen corresponding path program 2 times [2020-11-28 03:18:57,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:57,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108684131] [2020-11-28 03:18:57,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:57,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108684131] [2020-11-28 03:18:57,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:57,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:18:57,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943076079] [2020-11-28 03:18:57,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:18:57,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:57,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:18:57,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:18:57,430 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 5 states. [2020-11-28 03:18:57,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:57,466 INFO L93 Difference]: Finished difference Result 123 states and 251 transitions. [2020-11-28 03:18:57,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:18:57,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:18:57,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:57,467 INFO L225 Difference]: With dead ends: 123 [2020-11-28 03:18:57,467 INFO L226 Difference]: Without dead ends: 61 [2020-11-28 03:18:57,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:18:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-28 03:18:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-11-28 03:18:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-28 03:18:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 117 transitions. [2020-11-28 03:18:57,470 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 117 transitions. Word has length 18 [2020-11-28 03:18:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:57,470 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 117 transitions. [2020-11-28 03:18:57,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:18:57,470 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 117 transitions. [2020-11-28 03:18:57,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:18:57,471 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:57,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:57,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:18:57,471 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:57,472 INFO L82 PathProgramCache]: Analyzing trace with hash -898209114, now seen corresponding path program 3 times [2020-11-28 03:18:57,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:57,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595833445] [2020-11-28 03:18:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:57,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595833445] [2020-11-28 03:18:57,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:57,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:18:57,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034740895] [2020-11-28 03:18:57,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:18:57,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:57,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:18:57,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:18:57,555 INFO L87 Difference]: Start difference. First operand 61 states and 117 transitions. Second operand 4 states. [2020-11-28 03:18:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:57,575 INFO L93 Difference]: Finished difference Result 60 states and 116 transitions. [2020-11-28 03:18:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:18:57,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 03:18:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:57,576 INFO L225 Difference]: With dead ends: 60 [2020-11-28 03:18:57,576 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:18:57,576 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 [2020-11-28 03:18:57,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:18:57,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:18:57,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:18:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:18:57,577 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 03:18:57,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:57,577 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:18:57,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:18:57,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:18:57,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:18:57,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:18:57,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:18:57 BasicIcfg [2020-11-28 03:18:57,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:18:57,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:18:57,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:18:57,583 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:18:57,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:53" (3/4) ... [2020-11-28 03:18:57,586 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:18:57,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:18:57,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:18:57,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 03:18:57,603 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 03:18:57,603 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:18:57,603 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:18:57,604 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:18:57,662 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7352e562-eb1a-4183-b567-35e98d855e66/bin/uautomizer/witness.graphml [2020-11-28 03:18:57,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:18:57,663 INFO L168 Benchmark]: Toolchain (without parser) took 5305.61 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 57.2 MB in the beginning and 100.0 MB in the end (delta: -42.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:57,664 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 67.8 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:57,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.58 ms. Allocated memory is still 92.3 MB. Free memory was 57.0 MB in the beginning and 48.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:57,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.65 ms. Allocated memory is still 92.3 MB. Free memory was 47.9 MB in the beginning and 46.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:57,665 INFO L168 Benchmark]: Boogie Preprocessor took 40.45 ms. Allocated memory is still 92.3 MB. Free memory was 46.3 MB in the beginning and 44.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:57,666 INFO L168 Benchmark]: RCFGBuilder took 532.42 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 44.8 MB in the beginning and 81.5 MB in the end (delta: -36.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:57,666 INFO L168 Benchmark]: TraceAbstraction took 3983.25 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 80.7 MB in the beginning and 103.1 MB in the end (delta: -22.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:57,667 INFO L168 Benchmark]: Witness Printer took 79.75 ms. Allocated memory is still 136.3 MB. Free memory was 103.1 MB in the beginning and 100.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:57,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 67.8 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 617.58 ms. Allocated memory is still 92.3 MB. Free memory was 57.0 MB in the beginning and 48.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.65 ms. Allocated memory is still 92.3 MB. Free memory was 47.9 MB in the beginning and 46.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.45 ms. Allocated memory is still 92.3 MB. Free memory was 46.3 MB in the beginning and 44.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 532.42 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 44.8 MB in the beginning and 81.5 MB in the end (delta: -36.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3983.25 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 80.7 MB in the beginning and 103.1 MB in the end (delta: -22.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Witness Printer took 79.75 ms. Allocated memory is still 136.3 MB. Free memory was 103.1 MB in the beginning and 100.0 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 952 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3163 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: 3.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 117 SDtfs, 86 SDslu, 155 SDs, 0 SdLazy, 62 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...