./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3cc59967c9878975720f1b2e67b62ec3484487d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:36:00,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:36:00,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:36:00,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:36:00,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:36:00,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:36:00,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:36:00,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:36:00,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:36:00,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:36:00,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:36:00,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:36:00,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:36:00,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:36:00,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:36:00,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:36:00,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:36:00,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:36:00,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:36:00,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:36:00,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:36:00,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:36:00,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:36:00,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:36:01,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:36:01,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:36:01,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:36:01,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:36:01,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:36:01,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:36:01,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:36:01,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:36:01,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:36:01,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:36:01,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:36:01,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:36:01,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:36:01,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:36:01,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:36:01,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:36:01,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:36:01,021 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:36:01,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:36:01,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:36:01,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:36:01,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:36:01,055 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:36:01,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:36:01,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:36:01,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:36:01,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:36:01,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:36:01,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:36:01,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:36:01,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:36:01,057 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:36:01,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:36:01,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:36:01,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:36:01,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:36:01,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:36:01,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:36:01,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:36:01,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:36:01,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:36:01,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:36:01,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:36:01,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:36:01,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:36:01,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:36:01,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:36:01,062 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_f5a9540d-3516-4068-871c-d08a82ff1736/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3cc59967c9878975720f1b2e67b62ec3484487d [2020-11-29 19:36:01,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:36:01,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:36:01,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:36:01,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:36:01,410 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:36:01,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i [2020-11-29 19:36:01,494 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer/data/62fd5912b/3a3f8b29766b4e4fa893e584eec7646a/FLAG98095ceca [2020-11-29 19:36:02,124 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:36:02,125 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i [2020-11-29 19:36:02,155 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer/data/62fd5912b/3a3f8b29766b4e4fa893e584eec7646a/FLAG98095ceca [2020-11-29 19:36:02,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer/data/62fd5912b/3a3f8b29766b4e4fa893e584eec7646a [2020-11-29 19:36:02,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:36:02,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:36:02,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:36:02,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:36:02,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:36:02,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:36:02" (1/1) ... [2020-11-29 19:36:02,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4987542b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:02, skipping insertion in model container [2020-11-29 19:36:02,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:36:02" (1/1) ... [2020-11-29 19:36:02,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:36:02,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:36:03,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:36:03,075 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:36:03,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:36:03,280 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:36:03,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03 WrapperNode [2020-11-29 19:36:03,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:36:03,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:36:03,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:36:03,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:36:03,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03" (1/1) ... [2020-11-29 19:36:03,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03" (1/1) ... [2020-11-29 19:36:03,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:36:03,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:36:03,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:36:03,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:36:03,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03" (1/1) ... [2020-11-29 19:36:03,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03" (1/1) ... [2020-11-29 19:36:03,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03" (1/1) ... [2020-11-29 19:36:03,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03" (1/1) ... [2020-11-29 19:36:03,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03" (1/1) ... [2020-11-29 19:36:03,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03" (1/1) ... [2020-11-29 19:36:03,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03" (1/1) ... [2020-11-29 19:36:03,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:36:03,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:36:03,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:36:03,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:36:03,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/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 [2020-11-29 19:36:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:36:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 19:36:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:36:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:36:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 19:36:03,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 19:36:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 19:36:03,522 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 19:36:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 19:36:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 19:36:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:36:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 19:36:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:36:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:36:03,526 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 19:36:04,236 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:36:04,236 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 19:36:04,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:36:04 BoogieIcfgContainer [2020-11-29 19:36:04,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:36:04,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:36:04,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:36:04,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:36:04,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:36:02" (1/3) ... [2020-11-29 19:36:04,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0b4bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:36:04, skipping insertion in model container [2020-11-29 19:36:04,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:03" (2/3) ... [2020-11-29 19:36:04,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0b4bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:36:04, skipping insertion in model container [2020-11-29 19:36:04,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:36:04" (3/3) ... [2020-11-29 19:36:04,250 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-11-29 19:36:04,264 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 19:36:04,264 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:36:04,270 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:36:04,271 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 19:36:04,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,304 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,304 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,306 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,306 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,307 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,307 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,308 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,308 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,309 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,312 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,312 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,317 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,318 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,325 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,325 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 19:36:04,328 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 19:36:04,342 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 19:36:04,368 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:36:04,368 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:36:04,368 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:36:04,368 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:36:04,369 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:36:04,369 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:36:04,369 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:36:04,369 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:36:04,383 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 19:36:04,386 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-29 19:36:04,389 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-29 19:36:04,391 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-29 19:36:04,439 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-29 19:36:04,439 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 19:36:04,444 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-29 19:36:04,448 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-29 19:36:07,445 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-11-29 19:36:07,921 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-29 19:36:08,031 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-29 19:36:08,267 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-11-29 19:36:08,268 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-29 19:36:08,274 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-29 19:36:08,305 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-29 19:36:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-29 19:36:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:36:08,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:36:08,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:36:08,317 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:36:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:36:08,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-11-29 19:36:08,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:36:08,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708774722] [2020-11-29 19:36:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:36:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:36:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:36:08,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708774722] [2020-11-29 19:36:08,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:36:08,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 19:36:08,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732443025] [2020-11-29 19:36:08,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:36:08,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:36:08,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:36:08,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:36:08,640 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-29 19:36:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:36:08,732 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-11-29 19:36:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:36:08,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 19:36:08,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:36:08,760 INFO L225 Difference]: With dead ends: 266 [2020-11-29 19:36:08,760 INFO L226 Difference]: Without dead ends: 202 [2020-11-29 19:36:08,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:36:08,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-29 19:36:08,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-29 19:36:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-29 19:36:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-11-29 19:36:08,848 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-11-29 19:36:08,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:36:08,850 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-11-29 19:36:08,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:36:08,851 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-11-29 19:36:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:36:08,854 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:36:08,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:36:08,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:36:08,854 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:36:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:36:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1337858444, now seen corresponding path program 1 times [2020-11-29 19:36:08,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:36:08,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780768604] [2020-11-29 19:36:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:36:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:36:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:36:09,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780768604] [2020-11-29 19:36:09,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:36:09,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 19:36:09,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189764544] [2020-11-29 19:36:09,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:36:09,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:36:09,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:36:09,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:36:09,012 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-11-29 19:36:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:36:09,030 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-11-29 19:36:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:36:09,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 19:36:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:36:09,041 INFO L225 Difference]: With dead ends: 194 [2020-11-29 19:36:09,041 INFO L226 Difference]: Without dead ends: 194 [2020-11-29 19:36:09,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:36:09,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-29 19:36:09,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-29 19:36:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-29 19:36:09,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-11-29 19:36:09,061 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-11-29 19:36:09,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:36:09,062 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-11-29 19:36:09,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:36:09,062 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-11-29 19:36:09,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:36:09,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:36:09,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:36:09,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:36:09,065 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:36:09,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:36:09,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1476092281, now seen corresponding path program 1 times [2020-11-29 19:36:09,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:36:09,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580855921] [2020-11-29 19:36:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:36:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:36:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:36:09,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580855921] [2020-11-29 19:36:09,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:36:09,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:36:09,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442902604] [2020-11-29 19:36:09,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:36:09,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:36:09,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:36:09,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:36:09,201 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-11-29 19:36:09,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:36:09,242 INFO L93 Difference]: Finished difference Result 230 states and 596 transitions. [2020-11-29 19:36:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:36:09,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 19:36:09,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:36:09,246 INFO L225 Difference]: With dead ends: 230 [2020-11-29 19:36:09,246 INFO L226 Difference]: Without dead ends: 134 [2020-11-29 19:36:09,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:36:09,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-29 19:36:09,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-11-29 19:36:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-29 19:36:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-11-29 19:36:09,258 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 11 [2020-11-29 19:36:09,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:36:09,258 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-11-29 19:36:09,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:36:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-11-29 19:36:09,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 19:36:09,260 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:36:09,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:36:09,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:36:09,261 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:36:09,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:36:09,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1054826072, now seen corresponding path program 1 times [2020-11-29 19:36:09,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:36:09,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45558484] [2020-11-29 19:36:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:36:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:36:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:36:09,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45558484] [2020-11-29 19:36:09,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:36:09,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:36:09,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881146280] [2020-11-29 19:36:09,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:36:09,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:36:09,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:36:09,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:36:09,321 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 3 states. [2020-11-29 19:36:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:36:09,342 INFO L93 Difference]: Finished difference Result 206 states and 495 transitions. [2020-11-29 19:36:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:36:09,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-29 19:36:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:36:09,344 INFO L225 Difference]: With dead ends: 206 [2020-11-29 19:36:09,344 INFO L226 Difference]: Without dead ends: 110 [2020-11-29 19:36:09,345 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 [2020-11-29 19:36:09,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-29 19:36:09,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-11-29 19:36:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-29 19:36:09,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-11-29 19:36:09,355 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 13 [2020-11-29 19:36:09,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:36:09,355 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-11-29 19:36:09,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:36:09,355 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-11-29 19:36:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 19:36:09,359 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:36:09,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:36:09,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:36:09,359 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:36:09,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:36:09,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1395741464, now seen corresponding path program 2 times [2020-11-29 19:36:09,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:36:09,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715888054] [2020-11-29 19:36:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:36:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:36:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:36:09,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715888054] [2020-11-29 19:36:09,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:36:09,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:36:09,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032329205] [2020-11-29 19:36:09,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:36:09,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:36:09,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:36:09,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:36:09,461 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-11-29 19:36:09,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:36:09,506 INFO L93 Difference]: Finished difference Result 158 states and 361 transitions. [2020-11-29 19:36:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:36:09,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 19:36:09,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:36:09,508 INFO L225 Difference]: With dead ends: 158 [2020-11-29 19:36:09,508 INFO L226 Difference]: Without dead ends: 86 [2020-11-29 19:36:09,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:36:09,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-29 19:36:09,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-29 19:36:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-29 19:36:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-11-29 19:36:09,516 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 13 [2020-11-29 19:36:09,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:36:09,516 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-11-29 19:36:09,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:36:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-11-29 19:36:09,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 19:36:09,518 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:36:09,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:36:09,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:36:09,518 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:36:09,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:36:09,519 INFO L82 PathProgramCache]: Analyzing trace with hash -698343546, now seen corresponding path program 3 times [2020-11-29 19:36:09,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:36:09,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197034157] [2020-11-29 19:36:09,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:36:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:36:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:36:09,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197034157] [2020-11-29 19:36:09,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:36:09,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:36:09,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162769784] [2020-11-29 19:36:09,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:36:09,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:36:09,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:36:09,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:36:09,652 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 4 states. [2020-11-29 19:36:09,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:36:09,705 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-11-29 19:36:09,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:36:09,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 19:36:09,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:36:09,706 INFO L225 Difference]: With dead ends: 99 [2020-11-29 19:36:09,706 INFO L226 Difference]: Without dead ends: 77 [2020-11-29 19:36:09,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:36:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-29 19:36:09,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-29 19:36:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-29 19:36:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 156 transitions. [2020-11-29 19:36:09,713 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 156 transitions. Word has length 13 [2020-11-29 19:36:09,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:36:09,713 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 156 transitions. [2020-11-29 19:36:09,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:36:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 156 transitions. [2020-11-29 19:36:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 19:36:09,714 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:36:09,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:36:09,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:36:09,715 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:36:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:36:09,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1795509398, now seen corresponding path program 1 times [2020-11-29 19:36:09,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:36:09,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615922600] [2020-11-29 19:36:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:36:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:36:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:36:09,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615922600] [2020-11-29 19:36:09,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:36:09,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:36:09,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803985759] [2020-11-29 19:36:09,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:36:09,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:36:09,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:36:09,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:36:09,837 INFO L87 Difference]: Start difference. First operand 77 states and 156 transitions. Second operand 5 states. [2020-11-29 19:36:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:36:09,920 INFO L93 Difference]: Finished difference Result 78 states and 146 transitions. [2020-11-29 19:36:09,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:36:09,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 19:36:09,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:36:09,922 INFO L225 Difference]: With dead ends: 78 [2020-11-29 19:36:09,922 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 19:36:09,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:36:09,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 19:36:09,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-29 19:36:09,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-29 19:36:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-11-29 19:36:09,927 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 14 [2020-11-29 19:36:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:36:09,927 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-11-29 19:36:09,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:36:09,928 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-11-29 19:36:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:36:09,929 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:36:09,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:36:09,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 19:36:09,929 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:36:09,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:36:09,930 INFO L82 PathProgramCache]: Analyzing trace with hash 213970275, now seen corresponding path program 1 times [2020-11-29 19:36:09,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:36:09,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319502316] [2020-11-29 19:36:09,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:36:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:36:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:36:10,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319502316] [2020-11-29 19:36:10,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:36:10,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:36:10,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781952222] [2020-11-29 19:36:10,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:36:10,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:36:10,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:36:10,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:36:10,073 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 6 states. [2020-11-29 19:36:10,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:36:10,145 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-11-29 19:36:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:36:10,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 19:36:10,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:36:10,147 INFO L225 Difference]: With dead ends: 60 [2020-11-29 19:36:10,147 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 19:36:10,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:36:10,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 19:36:10,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 19:36:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 19:36:10,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-29 19:36:10,153 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-11-29 19:36:10,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:36:10,153 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-29 19:36:10,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:36:10,153 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-29 19:36:10,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:36:10,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:36:10,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:36:10,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:36:10,155 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:36:10,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:36:10,155 INFO L82 PathProgramCache]: Analyzing trace with hash -534648938, now seen corresponding path program 1 times [2020-11-29 19:36:10,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:36:10,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074919942] [2020-11-29 19:36:10,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:36:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:36:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:36:10,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074919942] [2020-11-29 19:36:10,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:36:10,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:36:10,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311671038] [2020-11-29 19:36:10,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:36:10,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:36:10,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:36:10,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:36:10,227 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-11-29 19:36:10,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:36:10,257 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-11-29 19:36:10,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:36:10,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-29 19:36:10,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:36:10,257 INFO L225 Difference]: With dead ends: 53 [2020-11-29 19:36:10,257 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:36:10,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:36:10,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:36:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:36:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:36:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:36:10,259 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 19:36:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:36:10,259 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:36:10,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:36:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:36:10,259 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:36:10,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:36:10,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:36:10 BasicIcfg [2020-11-29 19:36:10,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:36:10,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:36:10,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:36:10,264 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:36:10,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:36:04" (3/4) ... [2020-11-29 19:36:10,268 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:36:10,281 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 19:36:10,281 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 19:36:10,282 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 19:36:10,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 19:36:10,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 19:36:10,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:36:10,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:36:10,352 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f5a9540d-3516-4068-871c-d08a82ff1736/bin/uautomizer/witness.graphml [2020-11-29 19:36:10,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:36:10,354 INFO L168 Benchmark]: Toolchain (without parser) took 7909.07 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 54.1 MB in the beginning and 53.3 MB in the end (delta: 763.0 kB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:36:10,355 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 61.1 MB in the beginning and 61.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:36:10,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 831.02 ms. Allocated memory is still 88.1 MB. Free memory was 53.8 MB in the beginning and 45.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:36:10,365 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.33 ms. Allocated memory is still 88.1 MB. Free memory was 45.4 MB in the beginning and 43.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:36:10,366 INFO L168 Benchmark]: Boogie Preprocessor took 52.07 ms. Allocated memory is still 88.1 MB. Free memory was 43.8 MB in the beginning and 42.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:36:10,366 INFO L168 Benchmark]: RCFGBuilder took 820.44 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 42.1 MB in the beginning and 71.0 MB in the end (delta: -28.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:36:10,367 INFO L168 Benchmark]: TraceAbstraction took 6022.80 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 70.3 MB in the beginning and 55.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:36:10,367 INFO L168 Benchmark]: Witness Printer took 88.71 ms. Allocated memory is still 130.0 MB. Free memory was 55.4 MB in the beginning and 53.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:36:10,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 61.1 MB in the beginning and 61.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 831.02 ms. Allocated memory is still 88.1 MB. Free memory was 53.8 MB in the beginning and 45.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.33 ms. Allocated memory is still 88.1 MB. Free memory was 45.4 MB in the beginning and 43.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.07 ms. Allocated memory is still 88.1 MB. Free memory was 43.8 MB in the beginning and 42.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 820.44 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 42.1 MB in the beginning and 71.0 MB in the end (delta: -28.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6022.80 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 70.3 MB in the beginning and 55.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. * Witness Printer took 88.71 ms. Allocated memory is still 130.0 MB. Free memory was 55.4 MB in the beginning and 53.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1039 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 89 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.8s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 173 SDtfs, 133 SDslu, 184 SDs, 0 SdLazy, 113 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 3437 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...