./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.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_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f379f812387216e0e849b4b339b79ebf8d69f8f ....................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:24:07,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:24:07,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:24:07,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:24:07,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:24:07,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:24:07,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:24:07,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:24:07,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:24:07,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:24:07,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:24:07,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:24:07,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:24:07,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:24:07,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:24:07,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:24:07,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:24:07,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:24:07,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:24:07,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:24:07,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:24:07,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:24:07,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:24:07,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:24:07,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:24:07,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:24:07,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:24:07,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:24:07,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:24:07,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:24:07,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:24:07,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:24:07,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:24:07,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:24:07,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:24:07,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:24:07,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:24:07,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:24:07,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:24:07,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:24:07,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:24:07,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:24:07,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:24:07,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:24:07,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:24:07,206 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:24:07,206 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:24:07,206 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:24:07,206 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:24:07,207 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:24:07,207 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:24:07,207 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:24:07,208 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:24:07,208 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:24:07,209 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:24:07,209 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:24:07,209 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:24:07,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:24:07,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:24:07,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:24:07,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:24:07,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:24:07,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:24:07,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:24:07,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:24:07,211 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:24:07,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:24:07,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:24:07,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:24:07,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:24:07,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:24:07,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:24:07,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:24:07,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:24:07,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:24:07,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:24:07,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:24:07,216 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:24:07,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:24:07,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:24:07,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:24:07,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:24:07,217 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f379f812387216e0e849b4b339b79ebf8d69f8f [2020-11-28 07:24:07,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:24:07,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:24:07,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:24:07,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:24:07,493 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:24:07,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2020-11-28 07:24:07,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/data/8546622eb/79517a915ff3489fa54a6ad942d2d847/FLAGfafab6a07 [2020-11-28 07:24:08,100 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:24:08,101 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2020-11-28 07:24:08,117 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/data/8546622eb/79517a915ff3489fa54a6ad942d2d847/FLAGfafab6a07 [2020-11-28 07:24:08,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/data/8546622eb/79517a915ff3489fa54a6ad942d2d847 [2020-11-28 07:24:08,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:24:08,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:24:08,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:24:08,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:24:08,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:24:08,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:24:08" (1/1) ... [2020-11-28 07:24:08,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195085b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:08, skipping insertion in model container [2020-11-28 07:24:08,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:24:08" (1/1) ... [2020-11-28 07:24:08,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:24:08,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:24:08,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:24:08,857 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:24:08,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:24:09,006 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:24:09,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09 WrapperNode [2020-11-28 07:24:09,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:24:09,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:24:09,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:24:09,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:24:09,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09" (1/1) ... [2020-11-28 07:24:09,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09" (1/1) ... [2020-11-28 07:24:09,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:24:09,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:24:09,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:24:09,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:24:09,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09" (1/1) ... [2020-11-28 07:24:09,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09" (1/1) ... [2020-11-28 07:24:09,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09" (1/1) ... [2020-11-28 07:24:09,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09" (1/1) ... [2020-11-28 07:24:09,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09" (1/1) ... [2020-11-28 07:24:09,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09" (1/1) ... [2020-11-28 07:24:09,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09" (1/1) ... [2020-11-28 07:24:09,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:24:09,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:24:09,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:24:09,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:24:09,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:24:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-28 07:24:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-28 07:24:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:24:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:24:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:24:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:24:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:24:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:24:09,180 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:24:09,626 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:24:09,626 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 07:24:09,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:24:09 BoogieIcfgContainer [2020-11-28 07:24:09,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:24:09,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:24:09,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:24:09,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:24:09,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:24:08" (1/3) ... [2020-11-28 07:24:09,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7893b4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:24:09, skipping insertion in model container [2020-11-28 07:24:09,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:09" (2/3) ... [2020-11-28 07:24:09,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7893b4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:24:09, skipping insertion in model container [2020-11-28 07:24:09,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:24:09" (3/3) ... [2020-11-28 07:24:09,635 INFO L111 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2020-11-28 07:24:09,643 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:24:09,643 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:24:09,647 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:24:09,648 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:24:09,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~z~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~z~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~z~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,682 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~z~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,683 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,683 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~z~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,683 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,683 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,683 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,685 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~z~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:24:09,715 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 07:24:09,726 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 07:24:09,758 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:24:09,758 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:24:09,758 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:24:09,759 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:24:09,759 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:24:09,759 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:24:09,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:24:09,760 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:24:09,776 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:24:09,778 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 65 transitions, 135 flow [2020-11-28 07:24:09,786 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 65 transitions, 135 flow [2020-11-28 07:24:09,788 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 58 places, 65 transitions, 135 flow [2020-11-28 07:24:09,844 INFO L129 PetriNetUnfolder]: 11/73 cut-off events. [2020-11-28 07:24:09,844 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 07:24:09,850 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 73 events. 11/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2020-11-28 07:24:09,855 INFO L116 LiptonReduction]: Number of co-enabled transitions 880 [2020-11-28 07:24:11,155 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-11-28 07:24:11,355 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-28 07:24:11,608 INFO L131 LiptonReduction]: Checked pairs total: 667 [2020-11-28 07:24:11,608 INFO L133 LiptonReduction]: Total number of compositions: 57 [2020-11-28 07:24:11,613 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 17 transitions, 39 flow [2020-11-28 07:24:11,621 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 39 states. [2020-11-28 07:24:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-28 07:24:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:24:11,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:24:11,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:24:11,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-28 07:24:11,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:24:11,633 INFO L82 PathProgramCache]: Analyzing trace with hash 468353290, now seen corresponding path program 1 times [2020-11-28 07:24:11,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:24:11,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597183752] [2020-11-28 07:24:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:24:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:24:11,783 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:24:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:24:11,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:24:11,841 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:24:11,841 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:24:11,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:24:11,842 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-28 07:24:11,846 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [253] [253] L688-6-->L688-7: Formula: (not (< (mod thr1Thread1of1ForFork0_~i~0_In2013343125 4294967296) (mod thr1Thread1of1ForFork0_~x~0_In2013343125 4294967296))) InVars {thr1Thread1of1ForFork0_~i~0=thr1Thread1of1ForFork0_~i~0_In2013343125, thr1Thread1of1ForFork0_~x~0=thr1Thread1of1ForFork0_~x~0_In2013343125} OutVars{thr1Thread1of1ForFork0_~i~0=thr1Thread1of1ForFork0_~i~0_In2013343125, thr1Thread1of1ForFork0_~x~0=thr1Thread1of1ForFork0_~x~0_In2013343125} AuxVars[] AssignedVars[] because there is no mapped edge [2020-11-28 07:24:11,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:24:11 BasicIcfg [2020-11-28 07:24:11,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:24:11,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:24:11,860 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:24:11,861 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:24:11,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:24:09" (3/4) ... [2020-11-28 07:24:11,863 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:24:11,864 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [253] [253] L688-6-->L688-7: Formula: (not (< (mod thr1Thread1of1ForFork0_~i~0_In2013343125 4294967296) (mod thr1Thread1of1ForFork0_~x~0_In2013343125 4294967296))) InVars {thr1Thread1of1ForFork0_~i~0=thr1Thread1of1ForFork0_~i~0_In2013343125, thr1Thread1of1ForFork0_~x~0=thr1Thread1of1ForFork0_~x~0_In2013343125} OutVars{thr1Thread1of1ForFork0_~i~0=thr1Thread1of1ForFork0_~i~0_In2013343125, thr1Thread1of1ForFork0_~x~0=thr1Thread1of1ForFork0_~x~0_In2013343125} AuxVars[] AssignedVars[] because there is no mapped edge [2020-11-28 07:24:11,916 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8fdde2ab-d669-4e44-a912-24605706ac9f/bin/utaipan/witness.graphml [2020-11-28 07:24:11,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:24:11,918 INFO L168 Benchmark]: Toolchain (without parser) took 3501.59 ms. Allocated memory was 132.1 MB in the beginning and 159.4 MB in the end (delta: 27.3 MB). Free memory was 102.9 MB in the beginning and 78.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:11,919 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory is still 49.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:24:11,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.87 ms. Allocated memory is still 132.1 MB. Free memory was 102.5 MB in the beginning and 90.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:11,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.28 ms. Allocated memory is still 132.1 MB. Free memory was 89.9 MB in the beginning and 88.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:11,924 INFO L168 Benchmark]: Boogie Preprocessor took 25.80 ms. Allocated memory is still 132.1 MB. Free memory was 88.2 MB in the beginning and 86.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:24:11,927 INFO L168 Benchmark]: RCFGBuilder took 527.00 ms. Allocated memory is still 132.1 MB. Free memory was 86.9 MB in the beginning and 67.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:11,927 INFO L168 Benchmark]: TraceAbstraction took 2230.48 ms. Allocated memory was 132.1 MB in the beginning and 159.4 MB in the end (delta: 27.3 MB). Free memory was 66.8 MB in the beginning and 80.9 MB in the end (delta: -14.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:11,928 INFO L168 Benchmark]: Witness Printer took 56.50 ms. Allocated memory is still 159.4 MB. Free memory was 80.9 MB in the beginning and 78.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:11,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory is still 49.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 587.87 ms. Allocated memory is still 132.1 MB. Free memory was 102.5 MB in the beginning and 90.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.28 ms. Allocated memory is still 132.1 MB. Free memory was 89.9 MB in the beginning and 88.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.80 ms. Allocated memory is still 132.1 MB. Free memory was 88.2 MB in the beginning and 86.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 527.00 ms. Allocated memory is still 132.1 MB. Free memory was 86.9 MB in the beginning and 67.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2230.48 ms. Allocated memory was 132.1 MB in the beginning and 159.4 MB in the end (delta: 27.3 MB). Free memory was 66.8 MB in the beginning and 80.9 MB in the end (delta: -14.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * Witness Printer took 56.50 ms. Allocated memory is still 159.4 MB. Free memory was 80.9 MB in the beginning and 78.8 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 525 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 11 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 58 PlacesBefore, 15 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 880 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 57 TotalNumberOfCompositions, 667 MoverChecksTotal - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L700] 0 pthread_t t; [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 [L695] COND TRUE 1 !(i == x && ( j == y || y <= x+1) && (x == 0 || y <= x+1 || k == z || z < y)) [L12] COND FALSE 1 !(0) [L12] 1 __assert_fail ("0", "28_buggy_simple_loop1_vf.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 incorrect! Received shutdown request...