./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/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 0.1.24-678e011 [2019-11-20 04:34:08,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:34:08,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:34:08,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:34:08,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:34:08,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:34:08,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:34:08,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:34:08,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:34:08,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:34:08,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:34:08,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:34:08,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:34:08,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:34:08,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:34:08,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:34:08,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:34:08,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:34:08,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:34:08,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:34:08,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:34:08,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:34:08,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:34:08,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:34:08,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:34:08,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:34:08,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:34:08,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:34:08,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:34:08,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:34:08,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:34:08,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:34:08,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:34:08,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:34:08,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:34:08,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:34:08,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:34:08,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:34:08,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:34:08,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:34:08,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:34:08,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 04:34:08,886 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:34:08,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:34:08,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:34:08,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:34:08,888 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:34:08,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:34:08,888 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:34:08,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:34:08,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:34:08,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:34:08,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:34:08,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:34:08,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:34:08,890 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:34:08,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:34:08,890 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:34:08,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:34:08,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:34:08,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:34:08,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:34:08,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:34:08,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:34:08,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:34:08,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:34:08,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:34:08,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:34:08,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:34:08,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:34:08,893 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_1e8b4755-3090-4e36-a31f-b44a986d0b0b/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 [2019-11-20 04:34:09,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:34:09,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:34:09,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:34:09,039 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:34:09,039 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:34:09,040 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/bin/uautomizer/../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2019-11-20 04:34:09,089 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/bin/uautomizer/data/82c04559b/ddd6adf7276d4f7ea94e22beacd77d93/FLAG1f595427c [2019-11-20 04:34:09,570 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:34:09,570 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2019-11-20 04:34:09,588 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/bin/uautomizer/data/82c04559b/ddd6adf7276d4f7ea94e22beacd77d93/FLAG1f595427c [2019-11-20 04:34:09,870 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/bin/uautomizer/data/82c04559b/ddd6adf7276d4f7ea94e22beacd77d93 [2019-11-20 04:34:09,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:34:09,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:34:09,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:34:09,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:34:09,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:34:09,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:34:09" (1/1) ... [2019-11-20 04:34:09,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4302e48d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:09, skipping insertion in model container [2019-11-20 04:34:09,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:34:09" (1/1) ... [2019-11-20 04:34:09,888 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:34:09,927 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:34:10,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:34:10,351 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:34:10,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:34:10,481 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:34:10,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10 WrapperNode [2019-11-20 04:34:10,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:34:10,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:34:10,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:34:10,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:34:10,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10" (1/1) ... [2019-11-20 04:34:10,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10" (1/1) ... [2019-11-20 04:34:10,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:34:10,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:34:10,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:34:10,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:34:10,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10" (1/1) ... [2019-11-20 04:34:10,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10" (1/1) ... [2019-11-20 04:34:10,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10" (1/1) ... [2019-11-20 04:34:10,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10" (1/1) ... [2019-11-20 04:34:10,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10" (1/1) ... [2019-11-20 04:34:10,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10" (1/1) ... [2019-11-20 04:34:10,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10" (1/1) ... [2019-11-20 04:34:10,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:34:10,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:34:10,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:34:10,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:34:10,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/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 [2019-11-20 04:34:10,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-20 04:34:10,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 04:34:10,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 04:34:10,628 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-11-20 04:34:10,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-11-20 04:34:10,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 04:34:10,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 04:34:10,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:34:10,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:34:10,631 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 04:34:10,976 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:34:10,977 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-20 04:34:10,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:34:10 BoogieIcfgContainer [2019-11-20 04:34:10,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:34:10,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:34:10,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:34:10,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:34:10,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:34:09" (1/3) ... [2019-11-20 04:34:10,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e9b460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:34:10, skipping insertion in model container [2019-11-20 04:34:10,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:34:10" (2/3) ... [2019-11-20 04:34:10,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e9b460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:34:10, skipping insertion in model container [2019-11-20 04:34:10,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:34:10" (3/3) ... [2019-11-20 04:34:10,985 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2019-11-20 04:34:11,017 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,017 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,017 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,017 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,018 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,018 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,018 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,018 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,019 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,019 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,019 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,019 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,019 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,019 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,020 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,020 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,020 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,020 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,021 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,021 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,021 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 04:34:11,037 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 04:34:11,037 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:34:11,044 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 04:34:11,053 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 04:34:11,071 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:34:11,071 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:34:11,071 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:34:11,071 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:34:11,071 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:34:11,072 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:34:11,072 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:34:11,072 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:34:11,082 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 79 transitions [2019-11-20 04:34:11,940 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 11498 states. [2019-11-20 04:34:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 11498 states. [2019-11-20 04:34:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-20 04:34:11,951 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:34:11,952 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] [2019-11-20 04:34:11,952 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:34:11,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:34:11,956 INFO L82 PathProgramCache]: Analyzing trace with hash 197122563, now seen corresponding path program 1 times [2019-11-20 04:34:11,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:34:11,962 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654436164] [2019-11-20 04:34:11,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:34:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:34:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:34:12,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654436164] [2019-11-20 04:34:12,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:34:12,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 04:34:12,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37271355] [2019-11-20 04:34:12,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 04:34:12,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:34:12,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 04:34:12,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 04:34:12,133 INFO L87 Difference]: Start difference. First operand 11498 states. Second operand 2 states. [2019-11-20 04:34:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:34:12,301 INFO L93 Difference]: Finished difference Result 11498 states and 36092 transitions. [2019-11-20 04:34:12,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 04:34:12,302 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-11-20 04:34:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:34:12,416 INFO L225 Difference]: With dead ends: 11498 [2019-11-20 04:34:12,416 INFO L226 Difference]: Without dead ends: 9006 [2019-11-20 04:34:12,418 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 [2019-11-20 04:34:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9006 states. [2019-11-20 04:34:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9006 to 9006. [2019-11-20 04:34:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9006 states. [2019-11-20 04:34:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9006 states to 9006 states and 28110 transitions. [2019-11-20 04:34:12,904 INFO L78 Accepts]: Start accepts. Automaton has 9006 states and 28110 transitions. Word has length 29 [2019-11-20 04:34:12,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:34:12,904 INFO L462 AbstractCegarLoop]: Abstraction has 9006 states and 28110 transitions. [2019-11-20 04:34:12,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 04:34:12,905 INFO L276 IsEmpty]: Start isEmpty. Operand 9006 states and 28110 transitions. [2019-11-20 04:34:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-20 04:34:12,907 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:34:12,907 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] [2019-11-20 04:34:12,907 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:34:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:34:12,908 INFO L82 PathProgramCache]: Analyzing trace with hash 916313188, now seen corresponding path program 1 times [2019-11-20 04:34:12,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:34:12,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351947797] [2019-11-20 04:34:12,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:34:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:34:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:34:12,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351947797] [2019-11-20 04:34:12,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:34:12,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 04:34:12,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132912112] [2019-11-20 04:34:12,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:34:12,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:34:13,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:34:13,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:34:13,000 INFO L87 Difference]: Start difference. First operand 9006 states and 28110 transitions. Second operand 4 states. [2019-11-20 04:34:13,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:34:13,134 INFO L93 Difference]: Finished difference Result 6962 states and 19462 transitions. [2019-11-20 04:34:13,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:34:13,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-11-20 04:34:13,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:34:13,182 INFO L225 Difference]: With dead ends: 6962 [2019-11-20 04:34:13,182 INFO L226 Difference]: Without dead ends: 6962 [2019-11-20 04:34:13,185 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 [2019-11-20 04:34:13,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6962 states. [2019-11-20 04:34:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6962 to 6018. [2019-11-20 04:34:13,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6018 states. [2019-11-20 04:34:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6018 states to 6018 states and 17195 transitions. [2019-11-20 04:34:13,365 INFO L78 Accepts]: Start accepts. Automaton has 6018 states and 17195 transitions. Word has length 29 [2019-11-20 04:34:13,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:34:13,365 INFO L462 AbstractCegarLoop]: Abstraction has 6018 states and 17195 transitions. [2019-11-20 04:34:13,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:34:13,365 INFO L276 IsEmpty]: Start isEmpty. Operand 6018 states and 17195 transitions. [2019-11-20 04:34:13,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-20 04:34:13,377 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:34:13,377 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] [2019-11-20 04:34:13,377 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:34:13,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:34:13,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1176794984, now seen corresponding path program 1 times [2019-11-20 04:34:13,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:34:13,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114039432] [2019-11-20 04:34:13,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:34:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:34:13,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:34:13,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114039432] [2019-11-20 04:34:13,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041883531] [2019-11-20 04:34:13,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/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 [2019-11-20 04:34:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:34:13,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:34:13,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:34:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 04:34:13,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:34:13,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 18 [2019-11-20 04:34:13,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946623435] [2019-11-20 04:34:13,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 04:34:13,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:34:13,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 04:34:13,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2019-11-20 04:34:13,998 INFO L87 Difference]: Start difference. First operand 6018 states and 17195 transitions. Second operand 18 states. [2019-11-20 04:34:14,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:34:14,327 INFO L93 Difference]: Finished difference Result 6887 states and 19324 transitions. [2019-11-20 04:34:14,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 04:34:14,328 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 55 [2019-11-20 04:34:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:34:14,361 INFO L225 Difference]: With dead ends: 6887 [2019-11-20 04:34:14,361 INFO L226 Difference]: Without dead ends: 6887 [2019-11-20 04:34:14,361 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2019-11-20 04:34:14,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6887 states. [2019-11-20 04:34:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6887 to 5982. [2019-11-20 04:34:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5982 states. [2019-11-20 04:34:14,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 17111 transitions. [2019-11-20 04:34:14,572 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 17111 transitions. Word has length 55 [2019-11-20 04:34:14,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:34:14,573 INFO L462 AbstractCegarLoop]: Abstraction has 5982 states and 17111 transitions. [2019-11-20 04:34:14,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 04:34:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 17111 transitions. [2019-11-20 04:34:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-20 04:34:14,587 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:34:14,587 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] [2019-11-20 04:34:14,790 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:34:14,790 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:34:14,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:34:14,791 INFO L82 PathProgramCache]: Analyzing trace with hash -960128164, now seen corresponding path program 1 times [2019-11-20 04:34:14,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:34:14,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824068213] [2019-11-20 04:34:14,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:34:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:34:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:34:15,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824068213] [2019-11-20 04:34:15,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948711387] [2019-11-20 04:34:15,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/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 [2019-11-20 04:34:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:34:15,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:34:15,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:34:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 04:34:15,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:34:15,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8] total 22 [2019-11-20 04:34:15,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142363933] [2019-11-20 04:34:15,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 04:34:15,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:34:15,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 04:34:15,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2019-11-20 04:34:15,565 INFO L87 Difference]: Start difference. First operand 5982 states and 17111 transitions. Second operand 22 states. [2019-11-20 04:34:15,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:34:15,927 INFO L93 Difference]: Finished difference Result 6401 states and 18037 transitions. [2019-11-20 04:34:15,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 04:34:15,927 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2019-11-20 04:34:15,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:34:15,943 INFO L225 Difference]: With dead ends: 6401 [2019-11-20 04:34:15,944 INFO L226 Difference]: Without dead ends: 6401 [2019-11-20 04:34:15,944 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2019-11-20 04:34:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2019-11-20 04:34:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 5766. [2019-11-20 04:34:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5766 states. [2019-11-20 04:34:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 16427 transitions. [2019-11-20 04:34:16,096 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 16427 transitions. Word has length 62 [2019-11-20 04:34:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:34:16,099 INFO L462 AbstractCegarLoop]: Abstraction has 5766 states and 16427 transitions. [2019-11-20 04:34:16,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 04:34:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 16427 transitions. [2019-11-20 04:34:16,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-20 04:34:16,112 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:34:16,112 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] [2019-11-20 04:34:16,323 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:34:16,323 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:34:16,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:34:16,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1663676489, now seen corresponding path program 1 times [2019-11-20 04:34:16,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:34:16,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451593036] [2019-11-20 04:34:16,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:34:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:34:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:34:16,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451593036] [2019-11-20 04:34:16,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438129838] [2019-11-20 04:34:16,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/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 [2019-11-20 04:34:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:34:16,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 04:34:16,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:34:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 04:34:17,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:34:17,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 26 [2019-11-20 04:34:17,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19804791] [2019-11-20 04:34:17,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-20 04:34:17,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:34:17,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-20 04:34:17,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2019-11-20 04:34:17,009 INFO L87 Difference]: Start difference. First operand 5766 states and 16427 transitions. Second operand 26 states. [2019-11-20 04:34:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:34:17,261 INFO L93 Difference]: Finished difference Result 1983 states and 5852 transitions. [2019-11-20 04:34:17,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 04:34:17,261 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 69 [2019-11-20 04:34:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:34:17,261 INFO L225 Difference]: With dead ends: 1983 [2019-11-20 04:34:17,262 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 04:34:17,262 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 [2019-11-20 04:34:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 04:34:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 04:34:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 04:34:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 04:34:17,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2019-11-20 04:34:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:34:17,264 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:34:17,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-20 04:34:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:34:17,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 04:34:17,475 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:34:17,477 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 04:34:17,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:34:17 BasicIcfg [2019-11-20 04:34:17,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:34:17,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:34:17,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:34:17,480 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:34:17,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:34:10" (3/4) ... [2019-11-20 04:34:17,487 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 04:34:17,494 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr [2019-11-20 04:34:17,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-20 04:34:17,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 04:34:17,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 04:34:17,538 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1e8b4755-3090-4e36-a31f-b44a986d0b0b/bin/uautomizer/witness.graphml [2019-11-20 04:34:17,539 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:34:17,540 INFO L168 Benchmark]: Toolchain (without parser) took 7666.82 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 361.8 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -65.5 MB). Peak memory consumption was 296.2 MB. Max. memory is 11.5 GB. [2019-11-20 04:34:17,541 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:34:17,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 608.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -196.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2019-11-20 04:34:17,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.23 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-20 04:34:17,542 INFO L168 Benchmark]: Boogie Preprocessor took 27.50 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:34:17,543 INFO L168 Benchmark]: RCFGBuilder took 416.17 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:34:17,543 INFO L168 Benchmark]: TraceAbstraction took 6500.18 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 194.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 87.8 MB). Peak memory consumption was 282.3 MB. Max. memory is 11.5 GB. [2019-11-20 04:34:17,544 INFO L168 Benchmark]: Witness Printer took 59.07 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:34:17,546 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 608.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -196.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.23 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.50 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 416.17 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6500.18 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 194.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 87.8 MB). Peak memory consumption was 282.3 MB. Max. memory is 11.5 GB. * Witness Printer took 59.07 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 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: 6.4s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 327 SDtfs, 1445 SDslu, 1567 SDs, 0 SdLazy, 484 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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=11498occurred 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: 1.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2484 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s 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...