./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd7f48506d18b6e9cdd68178e930b6c5cab4d379 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:48:45,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:48:45,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:48:45,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:48:45,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:48:45,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:48:45,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:48:45,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:48:45,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:48:45,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:48:45,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:48:45,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:48:45,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:48:45,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:48:45,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:48:45,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:48:45,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:48:45,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:48:45,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:48:45,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:48:45,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:48:45,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:48:45,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:48:45,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:48:45,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:48:45,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:48:45,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:48:46,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:48:46,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:48:46,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:48:46,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:48:46,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:48:46,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:48:46,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:48:46,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:48:46,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:48:46,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:48:46,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:48:46,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:48:46,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:48:46,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:48:46,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:48:46,033 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:48:46,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:48:46,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:48:46,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:48:46,035 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:48:46,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:48:46,035 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:48:46,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:48:46,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:48:46,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:48:46,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:48:46,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:48:46,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:48:46,036 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:48:46,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:48:46,037 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:48:46,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:48:46,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:48:46,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:48:46,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:48:46,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:48:46,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:48:46,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:48:46,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:48:46,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:48:46,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:48:46,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:48:46,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:48:46,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_84bd2718-94df-4304-8603-f6ccb349a65a/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(__VERIFIER_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 -> bd7f48506d18b6e9cdd68178e930b6c5cab4d379 [2019-11-25 08:48:46,216 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:48:46,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:48:46,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:48:46,235 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:48:46,235 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:48:46,237 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2019-11-25 08:48:46,295 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/data/e39b41311/4a63ccfbc618439498ab7e6743cda86e/FLAG304c8c275 [2019-11-25 08:48:46,777 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:48:46,778 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2019-11-25 08:48:46,794 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/data/e39b41311/4a63ccfbc618439498ab7e6743cda86e/FLAG304c8c275 [2019-11-25 08:48:47,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/data/e39b41311/4a63ccfbc618439498ab7e6743cda86e [2019-11-25 08:48:47,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:48:47,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:48:47,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:47,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:48:47,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:48:47,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:47" (1/1) ... [2019-11-25 08:48:47,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5388ff6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47, skipping insertion in model container [2019-11-25 08:48:47,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:47" (1/1) ... [2019-11-25 08:48:47,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:48:47,167 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:47,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:47,627 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:48:47,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:47,772 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:48:47,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47 WrapperNode [2019-11-25 08:48:47,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:47,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:47,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:48:47,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:48:47,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47" (1/1) ... [2019-11-25 08:48:47,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47" (1/1) ... [2019-11-25 08:48:47,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:47,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:48:47,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:48:47,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:48:47,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47" (1/1) ... [2019-11-25 08:48:47,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47" (1/1) ... [2019-11-25 08:48:47,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47" (1/1) ... [2019-11-25 08:48:47,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47" (1/1) ... [2019-11-25 08:48:47,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47" (1/1) ... [2019-11-25 08:48:47,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47" (1/1) ... [2019-11-25 08:48:47,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47" (1/1) ... [2019-11-25 08:48:47,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:48:47,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:48:47,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:48:47,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:48:47,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/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 [2019-11-25 08:48:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-25 08:48:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:48:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:48:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-11-25 08:48:47,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-11-25 08:48:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:48:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:48:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:48:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:48:47,917 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-25 08:48:48,332 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:48,332 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-25 08:48:48,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:48 BoogieIcfgContainer [2019-11-25 08:48:48,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:48,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:48:48,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:48:48,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:48:48,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:48:47" (1/3) ... [2019-11-25 08:48:48,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1c61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:48, skipping insertion in model container [2019-11-25 08:48:48,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:47" (2/3) ... [2019-11-25 08:48:48,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1c61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:48, skipping insertion in model container [2019-11-25 08:48:48,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:48" (3/3) ... [2019-11-25 08:48:48,339 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2019-11-25 08:48:48,386 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,386 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,387 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,387 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,387 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,387 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,388 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,388 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,389 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,389 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,389 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,389 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,390 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,390 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,391 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,391 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,391 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,391 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,392 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,392 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,392 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:48,407 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-25 08:48:48,407 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:48:48,414 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:48:48,432 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:48:48,457 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:48:48,457 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:48:48,457 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:48:48,458 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:48,458 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:48,458 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:48:48,458 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:48,458 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:48:48,476 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 79 transitions [2019-11-25 08:48:49,419 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 10826 states. [2019-11-25 08:48:49,422 INFO L276 IsEmpty]: Start isEmpty. Operand 10826 states. [2019-11-25 08:48:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-25 08:48:49,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:49,433 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:49,433 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:49,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:49,440 INFO L82 PathProgramCache]: Analyzing trace with hash 197122563, now seen corresponding path program 1 times [2019-11-25 08:48:49,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:49,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395611327] [2019-11-25 08:48:49,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:49,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395611327] [2019-11-25 08:48:49,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:49,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:48:49,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381559833] [2019-11-25 08:48:49,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:48:49,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:49,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:48:49,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:48:49,655 INFO L87 Difference]: Start difference. First operand 10826 states. Second operand 2 states. [2019-11-25 08:48:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:49,906 INFO L93 Difference]: Finished difference Result 10826 states and 34276 transitions. [2019-11-25 08:48:49,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:48:49,907 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-11-25 08:48:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:50,013 INFO L225 Difference]: With dead ends: 10826 [2019-11-25 08:48:50,013 INFO L226 Difference]: Without dead ends: 8334 [2019-11-25 08:48:50,015 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:48:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8334 states. [2019-11-25 08:48:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8334 to 8334. [2019-11-25 08:48:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8334 states. [2019-11-25 08:48:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8334 states to 8334 states and 26294 transitions. [2019-11-25 08:48:50,444 INFO L78 Accepts]: Start accepts. Automaton has 8334 states and 26294 transitions. Word has length 29 [2019-11-25 08:48:50,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:50,446 INFO L462 AbstractCegarLoop]: Abstraction has 8334 states and 26294 transitions. [2019-11-25 08:48:50,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:48:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8334 states and 26294 transitions. [2019-11-25 08:48:50,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-25 08:48:50,448 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:50,448 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:50,449 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:50,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:50,449 INFO L82 PathProgramCache]: Analyzing trace with hash 916313188, now seen corresponding path program 1 times [2019-11-25 08:48:50,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:50,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782004140] [2019-11-25 08:48:50,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:50,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782004140] [2019-11-25 08:48:50,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:50,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:48:50,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302824484] [2019-11-25 08:48:50,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:48:50,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:50,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:48:50,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:50,622 INFO L87 Difference]: Start difference. First operand 8334 states and 26294 transitions. Second operand 4 states. [2019-11-25 08:48:50,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:50,802 INFO L93 Difference]: Finished difference Result 6020 states and 17029 transitions. [2019-11-25 08:48:50,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:48:50,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-11-25 08:48:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:50,843 INFO L225 Difference]: With dead ends: 6020 [2019-11-25 08:48:50,843 INFO L226 Difference]: Without dead ends: 6020 [2019-11-25 08:48:50,844 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6020 states. [2019-11-25 08:48:51,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6020 to 5262. [2019-11-25 08:48:51,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5262 states. [2019-11-25 08:48:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 15165 transitions. [2019-11-25 08:48:51,024 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 15165 transitions. Word has length 29 [2019-11-25 08:48:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:51,025 INFO L462 AbstractCegarLoop]: Abstraction has 5262 states and 15165 transitions. [2019-11-25 08:48:51,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:48:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 15165 transitions. [2019-11-25 08:48:51,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-25 08:48:51,041 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:51,042 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:51,042 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:51,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:51,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1176794984, now seen corresponding path program 1 times [2019-11-25 08:48:51,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:51,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489871322] [2019-11-25 08:48:51,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:51,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489871322] [2019-11-25 08:48:51,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217415992] [2019-11-25 08:48:51,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:51,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:48:51,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:51,732 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-11-25 08:48:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:48:51,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:51,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 18 [2019-11-25 08:48:51,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402400467] [2019-11-25 08:48:51,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-25 08:48:51,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:51,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-25 08:48:51,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2019-11-25 08:48:51,818 INFO L87 Difference]: Start difference. First operand 5262 states and 15165 transitions. Second operand 18 states. [2019-11-25 08:48:52,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:52,130 INFO L93 Difference]: Finished difference Result 5993 states and 16981 transitions. [2019-11-25 08:48:52,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:48:52,130 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 55 [2019-11-25 08:48:52,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:52,157 INFO L225 Difference]: With dead ends: 5993 [2019-11-25 08:48:52,157 INFO L226 Difference]: Without dead ends: 5993 [2019-11-25 08:48:52,158 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:48:52,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5993 states. [2019-11-25 08:48:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5993 to 5250. [2019-11-25 08:48:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5250 states. [2019-11-25 08:48:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 15137 transitions. [2019-11-25 08:48:52,365 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 15137 transitions. Word has length 55 [2019-11-25 08:48:52,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:52,365 INFO L462 AbstractCegarLoop]: Abstraction has 5250 states and 15137 transitions. [2019-11-25 08:48:52,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-25 08:48:52,366 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 15137 transitions. [2019-11-25 08:48:52,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-25 08:48:52,376 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:52,377 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:52,579 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:52,579 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:52,580 INFO L82 PathProgramCache]: Analyzing trace with hash -960128164, now seen corresponding path program 1 times [2019-11-25 08:48:52,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:52,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131969192] [2019-11-25 08:48:52,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:52,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131969192] [2019-11-25 08:48:52,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784353801] [2019-11-25 08:48:52,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:53,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:48:53,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:48:53,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:53,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8] total 22 [2019-11-25 08:48:53,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579428793] [2019-11-25 08:48:53,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-25 08:48:53,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:53,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-25 08:48:53,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2019-11-25 08:48:53,214 INFO L87 Difference]: Start difference. First operand 5250 states and 15137 transitions. Second operand 22 states. [2019-11-25 08:48:53,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:53,658 INFO L93 Difference]: Finished difference Result 5813 states and 16519 transitions. [2019-11-25 08:48:53,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:48:53,659 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2019-11-25 08:48:53,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:53,680 INFO L225 Difference]: With dead ends: 5813 [2019-11-25 08:48:53,680 INFO L226 Difference]: Without dead ends: 5813 [2019-11-25 08:48:53,681 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2019-11-25 08:48:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5813 states. [2019-11-25 08:48:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5813 to 5178. [2019-11-25 08:48:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5178 states. [2019-11-25 08:48:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5178 states to 5178 states and 14909 transitions. [2019-11-25 08:48:53,829 INFO L78 Accepts]: Start accepts. Automaton has 5178 states and 14909 transitions. Word has length 62 [2019-11-25 08:48:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:53,831 INFO L462 AbstractCegarLoop]: Abstraction has 5178 states and 14909 transitions. [2019-11-25 08:48:53,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-25 08:48:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5178 states and 14909 transitions. [2019-11-25 08:48:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-25 08:48:53,844 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:53,844 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:54,047 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:54,047 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:54,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1663676489, now seen corresponding path program 1 times [2019-11-25 08:48:54,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:54,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920673778] [2019-11-25 08:48:54,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:54,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920673778] [2019-11-25 08:48:54,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880774631] [2019-11-25 08:48:54,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:54,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:48:54,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:48:54,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:54,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 26 [2019-11-25 08:48:54,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586565724] [2019-11-25 08:48:54,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-25 08:48:54,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:54,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-25 08:48:54,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2019-11-25 08:48:54,728 INFO L87 Difference]: Start difference. First operand 5178 states and 14909 transitions. Second operand 26 states. [2019-11-25 08:48:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:54,964 INFO L93 Difference]: Finished difference Result 1395 states and 4334 transitions. [2019-11-25 08:48:54,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-25 08:48:54,964 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 69 [2019-11-25 08:48:54,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:54,965 INFO L225 Difference]: With dead ends: 1395 [2019-11-25 08:48:54,965 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:48:54,966 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2019-11-25 08:48:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:48:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:48:54,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:48:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:48:54,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2019-11-25 08:48:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:54,967 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:54,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-25 08:48:54,967 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:48:54,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:48:55,178 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:55,180 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-25 08:48:55,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:48:55 BasicIcfg [2019-11-25 08:48:55,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:48:55,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:55,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:55,182 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:55,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:48" (3/4) ... [2019-11-25 08:48:55,186 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:48:55,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr [2019-11-25 08:48:55,197 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-25 08:48:55,197 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:48:55,198 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:48:55,239 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_84bd2718-94df-4304-8603-f6ccb349a65a/bin/uautomizer/witness.graphml [2019-11-25 08:48:55,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:55,240 INFO L168 Benchmark]: Toolchain (without parser) took 8143.46 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 233.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -110.9 MB). Peak memory consumption was 122.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:55,241 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:55,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:55,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:55,242 INFO L168 Benchmark]: Boogie Preprocessor took 35.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:55,242 INFO L168 Benchmark]: RCFGBuilder took 478.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:55,243 INFO L168 Benchmark]: TraceAbstraction took 6847.45 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 79.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.4 MB). Peak memory consumption was 114.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:55,243 INFO L168 Benchmark]: Witness Printer took 56.80 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:55,245 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 672.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 478.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6847.45 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 79.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.4 MB). Peak memory consumption was 114.1 MB. Max. memory is 11.5 GB. * Witness Printer took 56.80 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 675]: 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 5 procedures, 78 locations, 1 error locations. Result: SAFE, OverallTime: 6.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 342 SDtfs, 973 SDslu, 1650 SDs, 0 SdLazy, 496 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 252 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10826occurred 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: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 2136 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 422 ConstructedInterpolants, 0 QuantifiedInterpolants, 100082 SizeOfPredicates, 18 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 6/80 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...