./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/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 8b5bddfef3ba7869d349ebe06c117f44aa1f95a0 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:23:43,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:23:43,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:23:43,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:23:43,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:23:43,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:23:43,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:23:43,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:23:43,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:23:43,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:23:43,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:23:43,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:23:43,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:23:43,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:23:43,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:23:43,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:23:43,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:23:43,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:23:43,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:23:43,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:23:43,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:23:43,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:23:43,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:23:43,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:23:43,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:23:43,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:23:43,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:23:43,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:23:43,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:23:43,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:23:43,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:23:43,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:23:43,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:23:43,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:23:43,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:23:43,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:23:43,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:23:43,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:23:43,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:23:43,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:23:43,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:23:43,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:23:43,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:23:43,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:23:43,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:23:43,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:23:43,570 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:23:43,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:23:43,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:23:43,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:23:43,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:23:43,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:23:43,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:23:43,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:23:43,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:23:43,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:23:43,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:23:43,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:23:43,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:23:43,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:23:43,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:23:43,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:23:43,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:23:43,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:23:43,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:23:43,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:23:43,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:23:43,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:23:43,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:23:43,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:23:43,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:23:43,580 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_ab813e7a-2d08-4740-a9ef-985e1942ad6d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b5bddfef3ba7869d349ebe06c117f44aa1f95a0 [2020-11-30 01:23:43,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:23:43,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:23:43,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:23:43,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:23:43,919 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:23:43,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i [2020-11-30 01:23:44,017 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer/data/49838a2ff/8d35bce0444f458ea0016a2e85150426/FLAGf28416009 [2020-11-30 01:23:44,795 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:23:44,796 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i [2020-11-30 01:23:44,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer/data/49838a2ff/8d35bce0444f458ea0016a2e85150426/FLAGf28416009 [2020-11-30 01:23:45,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer/data/49838a2ff/8d35bce0444f458ea0016a2e85150426 [2020-11-30 01:23:45,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:23:45,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:23:45,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:23:45,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:23:45,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:23:45,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68224d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45, skipping insertion in model container [2020-11-30 01:23:45,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:23:45,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:23:45,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:23:45,667 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:23:45,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:23:45,837 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:23:45,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45 WrapperNode [2020-11-30 01:23:45,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:23:45,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:23:45,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:23:45,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:23:45,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:23:45,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:23:45,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:23:45,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:23:45,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:45,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... [2020-11-30 01:23:46,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:23:46,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:23:46,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:23:46,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:23:46,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/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 01:23:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:23:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-30 01:23:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:23:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:23:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-30 01:23:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-30 01:23:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-30 01:23:46,087 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-30 01:23:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-30 01:23:46,087 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-30 01:23:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:23:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-30 01:23:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:23:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:23:46,091 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 01:23:46,726 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:23:46,726 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 01:23:46,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:23:46 BoogieIcfgContainer [2020-11-30 01:23:46,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:23:46,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:23:46,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:23:46,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:23:46,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:23:45" (1/3) ... [2020-11-30 01:23:46,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524e32d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:23:46, skipping insertion in model container [2020-11-30 01:23:46,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:23:45" (2/3) ... [2020-11-30 01:23:46,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524e32d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:23:46, skipping insertion in model container [2020-11-30 01:23:46,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:23:46" (3/3) ... [2020-11-30 01:23:46,745 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-11-30 01:23:46,763 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 01:23:46,764 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:23:46,769 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:23:46,770 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 01:23:46,811 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,812 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,812 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,812 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,813 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,813 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,814 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,815 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,815 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,816 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,817 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,817 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,817 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,818 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,819 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,820 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,820 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,826 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,826 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,834 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,835 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,839 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,840 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:23:46,848 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-30 01:23:46,864 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 01:23:46,904 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:23:46,905 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:23:46,905 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:23:46,905 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:23:46,905 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:23:46,906 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:23:46,906 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:23:46,906 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:23:46,927 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 01:23:46,931 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-30 01:23:46,935 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-30 01:23:46,937 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-30 01:23:47,026 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-30 01:23:47,026 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-30 01:23:47,032 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. [2020-11-30 01:23:47,038 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-30 01:23:49,104 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-30 01:23:49,210 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-11-30 01:23:49,858 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-30 01:23:49,976 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-30 01:23:50,004 INFO L131 LiptonReduction]: Checked pairs total: 3163 [2020-11-30 01:23:50,005 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-30 01:23:50,011 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-30 01:23:50,047 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-30 01:23:50,050 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-30 01:23:50,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:23:50,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:50,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:50,060 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:50,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:50,067 INFO L82 PathProgramCache]: Analyzing trace with hash 2115134997, now seen corresponding path program 1 times [2020-11-30 01:23:50,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:23:50,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700878005] [2020-11-30 01:23:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:23:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:23:50,302 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 01:23:50,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700878005] [2020-11-30 01:23:50,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:23:50,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:23:50,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448295807] [2020-11-30 01:23:50,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:23:50,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:23:50,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:23:50,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:23:50,331 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-30 01:23:50,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:50,371 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-30 01:23:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:23:50,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 01:23:50,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:50,397 INFO L225 Difference]: With dead ends: 362 [2020-11-30 01:23:50,397 INFO L226 Difference]: Without dead ends: 298 [2020-11-30 01:23:50,399 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 [2020-11-30 01:23:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-30 01:23:50,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-30 01:23:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-30 01:23:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-30 01:23:50,513 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-30 01:23:50,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:50,514 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-30 01:23:50,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:23:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-30 01:23:50,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:23:50,517 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:50,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:50,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:23:50,518 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:50,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:50,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1144664430, now seen corresponding path program 1 times [2020-11-30 01:23:50,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:23:50,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671123191] [2020-11-30 01:23:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:23:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:23:50,656 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 01:23:50,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671123191] [2020-11-30 01:23:50,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:23:50,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:23:50,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124672906] [2020-11-30 01:23:50,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:23:50,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:23:50,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:23:50,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:23:50,660 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-30 01:23:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:50,716 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-30 01:23:50,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:23:50,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-30 01:23:50,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:50,728 INFO L225 Difference]: With dead ends: 217 [2020-11-30 01:23:50,728 INFO L226 Difference]: Without dead ends: 217 [2020-11-30 01:23:50,729 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 01:23:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-30 01:23:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-30 01:23:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-30 01:23:50,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-30 01:23:50,758 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-30 01:23:50,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:50,759 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-30 01:23:50,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:23:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-30 01:23:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:23:50,762 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:50,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:50,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:23:50,763 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:50,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:50,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1523104206, now seen corresponding path program 1 times [2020-11-30 01:23:50,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:23:50,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886936121] [2020-11-30 01:23:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:23:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:23:50,954 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 01:23:50,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886936121] [2020-11-30 01:23:50,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:23:50,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:23:50,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951142163] [2020-11-30 01:23:50,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:23:50,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:23:50,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:23:50,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:23:50,957 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-11-30 01:23:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:50,999 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-30 01:23:51,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:23:51,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 01:23:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:51,003 INFO L225 Difference]: With dead ends: 136 [2020-11-30 01:23:51,003 INFO L226 Difference]: Without dead ends: 136 [2020-11-30 01:23:51,003 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 [2020-11-30 01:23:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-30 01:23:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-30 01:23:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-30 01:23:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-30 01:23:51,022 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-30 01:23:51,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:51,023 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-30 01:23:51,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:23:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-30 01:23:51,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:23:51,027 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:51,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:51,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:23:51,029 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:51,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1616090199, now seen corresponding path program 1 times [2020-11-30 01:23:51,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:23:51,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933672438] [2020-11-30 01:23:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:23:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:23:51,163 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 01:23:51,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933672438] [2020-11-30 01:23:51,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:23:51,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:23:51,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369796829] [2020-11-30 01:23:51,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:23:51,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:23:51,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:23:51,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:23:51,171 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-11-30 01:23:51,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:51,221 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-30 01:23:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:23:51,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-30 01:23:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:51,223 INFO L225 Difference]: With dead ends: 109 [2020-11-30 01:23:51,223 INFO L226 Difference]: Without dead ends: 109 [2020-11-30 01:23:51,224 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 [2020-11-30 01:23:51,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-30 01:23:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-30 01:23:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-30 01:23:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-30 01:23:51,233 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-30 01:23:51,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:51,233 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-30 01:23:51,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:23:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-30 01:23:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:23:51,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:51,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:51,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:23:51,244 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:51,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:51,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1930604432, now seen corresponding path program 1 times [2020-11-30 01:23:51,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:23:51,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116451222] [2020-11-30 01:23:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:23:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:23:51,411 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 01:23:51,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116451222] [2020-11-30 01:23:51,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:23:51,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:23:51,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761601135] [2020-11-30 01:23:51,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:23:51,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:23:51,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:23:51,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:23:51,414 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-11-30 01:23:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:51,516 INFO L93 Difference]: Finished difference Result 188 states and 388 transitions. [2020-11-30 01:23:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:23:51,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-30 01:23:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:51,518 INFO L225 Difference]: With dead ends: 188 [2020-11-30 01:23:51,518 INFO L226 Difference]: Without dead ends: 124 [2020-11-30 01:23:51,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:23:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-30 01:23:51,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-11-30 01:23:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-30 01:23:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 229 transitions. [2020-11-30 01:23:51,539 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 229 transitions. Word has length 18 [2020-11-30 01:23:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:51,539 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 229 transitions. [2020-11-30 01:23:51,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:23:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 229 transitions. [2020-11-30 01:23:51,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:23:51,546 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:51,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:51,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:23:51,547 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:51,548 INFO L82 PathProgramCache]: Analyzing trace with hash -17726670, now seen corresponding path program 2 times [2020-11-30 01:23:51,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:23:51,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5408643] [2020-11-30 01:23:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:23:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:23:51,655 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 01:23:51,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5408643] [2020-11-30 01:23:51,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:23:51,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:23:51,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044951285] [2020-11-30 01:23:51,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:23:51,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:23:51,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:23:51,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:23:51,658 INFO L87 Difference]: Start difference. First operand 109 states and 229 transitions. Second operand 4 states. [2020-11-30 01:23:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:51,728 INFO L93 Difference]: Finished difference Result 123 states and 251 transitions. [2020-11-30 01:23:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:23:51,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 01:23:51,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:51,729 INFO L225 Difference]: With dead ends: 123 [2020-11-30 01:23:51,729 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 01:23:51,730 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 01:23:51,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 01:23:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-30 01:23:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 01:23:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2020-11-30 01:23:51,732 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 18 [2020-11-30 01:23:51,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:51,732 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2020-11-30 01:23:51,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:23:51,733 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2020-11-30 01:23:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:23:51,733 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:51,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:51,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:23:51,734 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:51,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:51,734 INFO L82 PathProgramCache]: Analyzing trace with hash 30994256, now seen corresponding path program 3 times [2020-11-30 01:23:51,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:23:51,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805199271] [2020-11-30 01:23:51,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:23:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:23:51,808 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 01:23:51,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805199271] [2020-11-30 01:23:51,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:23:51,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:23:51,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978958302] [2020-11-30 01:23:51,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:23:51,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:23:51,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:23:51,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:23:51,812 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand 4 states. [2020-11-30 01:23:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:51,856 INFO L93 Difference]: Finished difference Result 42 states and 68 transitions. [2020-11-30 01:23:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:23:51,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 01:23:51,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:51,857 INFO L225 Difference]: With dead ends: 42 [2020-11-30 01:23:51,857 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:23:51,858 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 01:23:51,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:23:51,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:23:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:23:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:23:51,859 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-30 01:23:51,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:51,859 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:23:51,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:23:51,860 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:23:51,860 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:23:51,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:23:51,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:23:51 BasicIcfg [2020-11-30 01:23:51,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:23:51,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:23:51,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:23:51,866 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:23:51,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:23:46" (3/4) ... [2020-11-30 01:23:51,870 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:23:51,877 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-30 01:23:51,878 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-30 01:23:51,878 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-30 01:23:51,889 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 01:23:51,890 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:23:51,890 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:23:51,890 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:23:51,953 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ab813e7a-2d08-4740-a9ef-985e1942ad6d/bin/uautomizer/witness.graphml [2020-11-30 01:23:51,954 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:23:51,956 INFO L168 Benchmark]: Toolchain (without parser) took 6900.36 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 108.4 MB in the beginning and 52.3 MB in the end (delta: 56.1 MB). Peak memory consumption was 83.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:51,956 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:23:51,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.73 ms. Allocated memory is still 136.3 MB. Free memory was 108.1 MB in the beginning and 92.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:51,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.94 ms. Allocated memory is still 136.3 MB. Free memory was 92.7 MB in the beginning and 90.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:51,958 INFO L168 Benchmark]: Boogie Preprocessor took 64.31 ms. Allocated memory is still 136.3 MB. Free memory was 90.6 MB in the beginning and 89.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:23:51,959 INFO L168 Benchmark]: RCFGBuilder took 726.25 ms. Allocated memory is still 136.3 MB. Free memory was 89.3 MB in the beginning and 107.0 MB in the end (delta: -17.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:51,960 INFO L168 Benchmark]: TraceAbstraction took 5128.04 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 106.4 MB in the beginning and 55.5 MB in the end (delta: 51.0 MB). Peak memory consumption was 78.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:51,961 INFO L168 Benchmark]: Witness Printer took 88.40 ms. Allocated memory is still 163.6 MB. Free memory was 55.5 MB in the beginning and 52.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:23:51,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 781.73 ms. Allocated memory is still 136.3 MB. Free memory was 108.1 MB in the beginning and 92.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.94 ms. Allocated memory is still 136.3 MB. Free memory was 92.7 MB in the beginning and 90.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.31 ms. Allocated memory is still 136.3 MB. Free memory was 90.6 MB in the beginning and 89.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 726.25 ms. Allocated memory is still 136.3 MB. Free memory was 89.3 MB in the beginning and 107.0 MB in the end (delta: -17.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5128.04 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 106.4 MB in the beginning and 55.5 MB in the end (delta: 51.0 MB). Peak memory consumption was 78.0 MB. Max. memory is 16.1 GB. * Witness Printer took 88.40 ms. Allocated memory is still 163.6 MB. Free memory was 55.5 MB in the beginning and 52.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 952 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 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: 4.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 139 SDtfs, 76 SDslu, 194 SDs, 0 SdLazy, 72 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s 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, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3117 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...