./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss4f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ss4f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25c195ba8f45bf926b5797f815caf7c64c26ab87 ............................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:22:56,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:22:56,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:22:57,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:22:57,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:22:57,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:22:57,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:22:57,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:22:57,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:22:57,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:22:57,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:22:57,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:22:57,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:22:57,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:22:57,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:22:57,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:22:57,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:22:57,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:22:57,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:22:57,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:22:57,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:22:57,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:22:57,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:22:57,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:22:57,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:22:57,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:22:57,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:22:57,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:22:57,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:22:57,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:22:57,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:22:57,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:22:57,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:22:57,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:22:57,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:22:57,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:22:57,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:22:57,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:22:57,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:22:57,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:22:57,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:22:57,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:22:57,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:22:57,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:22:57,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:22:57,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:22:57,159 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:22:57,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:22:57,159 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:22:57,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:22:57,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:22:57,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:22:57,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:22:57,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:22:57,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:22:57,161 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:22:57,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:22:57,162 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:22:57,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:22:57,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:22:57,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:22:57,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:22:57,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:22:57,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:22:57,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:22:57,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:22:57,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:22:57,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:22:57,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:22:57,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:22:57,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25c195ba8f45bf926b5797f815caf7c64c26ab87 [2021-10-11 00:22:57,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:22:57,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:22:57,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:22:57,596 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:22:57,601 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:22:57,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/array-fpi/ss4f.c [2021-10-11 00:22:57,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/data/a6b455751/aa0d8ce62c174fdba9405fff9a9afd67/FLAG03c3f73ef [2021-10-11 00:22:58,208 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:22:58,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/sv-benchmarks/c/array-fpi/ss4f.c [2021-10-11 00:22:58,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/data/a6b455751/aa0d8ce62c174fdba9405fff9a9afd67/FLAG03c3f73ef [2021-10-11 00:22:58,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/data/a6b455751/aa0d8ce62c174fdba9405fff9a9afd67 [2021-10-11 00:22:58,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:22:58,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:22:58,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:58,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:22:58,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:22:58,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:58" (1/1) ... [2021-10-11 00:22:58,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595b1dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58, skipping insertion in model container [2021-10-11 00:22:58,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:58" (1/1) ... [2021-10-11 00:22:58,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:22:58,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:22:58,787 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/sv-benchmarks/c/array-fpi/ss4f.c[587,600] [2021-10-11 00:22:58,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:58,830 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:22:58,844 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/sv-benchmarks/c/array-fpi/ss4f.c[587,600] [2021-10-11 00:22:58,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:58,871 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:22:58,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58 WrapperNode [2021-10-11 00:22:58,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:58,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:22:58,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:22:58,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:22:58,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58" (1/1) ... [2021-10-11 00:22:58,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58" (1/1) ... [2021-10-11 00:22:58,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:22:58,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:22:58,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:22:58,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:22:58,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58" (1/1) ... [2021-10-11 00:22:58,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58" (1/1) ... [2021-10-11 00:22:58,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58" (1/1) ... [2021-10-11 00:22:58,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58" (1/1) ... [2021-10-11 00:22:58,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58" (1/1) ... [2021-10-11 00:22:58,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58" (1/1) ... [2021-10-11 00:22:58,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58" (1/1) ... [2021-10-11 00:22:58,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:22:58,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:22:58,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:22:58,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:22:58,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:22:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:22:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:22:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:22:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 00:22:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:22:59,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:22:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:22:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:22:59,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:22:59,328 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 00:22:59,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:59 BoogieIcfgContainer [2021-10-11 00:22:59,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:22:59,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:22:59,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:22:59,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:22:59,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:22:58" (1/3) ... [2021-10-11 00:22:59,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59606c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:59, skipping insertion in model container [2021-10-11 00:22:59,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:58" (2/3) ... [2021-10-11 00:22:59,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59606c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:59, skipping insertion in model container [2021-10-11 00:22:59,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:59" (3/3) ... [2021-10-11 00:22:59,340 INFO L111 eAbstractionObserver]: Analyzing ICFG ss4f.c [2021-10-11 00:22:59,356 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:22:59,360 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:22:59,373 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:22:59,403 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:22:59,404 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:22:59,404 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:22:59,404 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:22:59,404 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:22:59,404 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:22:59,404 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:22:59,405 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:22:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-10-11 00:22:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:22:59,444 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:59,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:59,446 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:59,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:59,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2021-10-11 00:22:59,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:59,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950339074] [2021-10-11 00:22:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:59,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950339074] [2021-10-11 00:22:59,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:59,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:22:59,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559591432] [2021-10-11 00:22:59,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:22:59,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:59,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:22:59,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:22:59,851 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2021-10-11 00:22:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:59,876 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2021-10-11 00:22:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:22:59,877 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2021-10-11 00:22:59,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:59,916 INFO L225 Difference]: With dead ends: 44 [2021-10-11 00:22:59,916 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 00:22:59,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:22:59,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 00:22:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-11 00:22:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 00:22:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-11 00:22:59,983 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2021-10-11 00:22:59,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:59,984 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-11 00:22:59,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:22:59,984 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-11 00:22:59,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:22:59,986 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:59,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:59,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:22:59,988 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:59,994 INFO L82 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2021-10-11 00:22:59,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:59,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365714989] [2021-10-11 00:22:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:00,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365714989] [2021-10-11 00:23:00,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:00,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:23:00,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003010762] [2021-10-11 00:23:00,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:23:00,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:00,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:23:00,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:23:00,195 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2021-10-11 00:23:00,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:00,339 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2021-10-11 00:23:00,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:23:00,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-10-11 00:23:00,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:00,343 INFO L225 Difference]: With dead ends: 41 [2021-10-11 00:23:00,343 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 00:23:00,344 INFO L677 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 [2021-10-11 00:23:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 00:23:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-10-11 00:23:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 00:23:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-10-11 00:23:00,360 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2021-10-11 00:23:00,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:00,361 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-11 00:23:00,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:23:00,362 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-10-11 00:23:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:23:00,364 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:00,365 INFO L422 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] [2021-10-11 00:23:00,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:23:00,366 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:00,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2021-10-11 00:23:00,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:00,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845306704] [2021-10-11 00:23:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:00,446 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:23:00,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888030905] [2021-10-11 00:23:00,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:23:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:00,581 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:00,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:00,699 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:00,700 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:23:00,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 00:23:00,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:23:00 BoogieIcfgContainer [2021-10-11 00:23:00,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:23:00,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:23:00,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:23:00,960 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:23:00,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:59" (3/4) ... [2021-10-11 00:23:00,963 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:23:01,025 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42e04f85-dc42-47fa-a889-601e43b1e73d/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:23:01,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:23:01,027 INFO L168 Benchmark]: Toolchain (without parser) took 2462.49 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 55.2 MB in the beginning and 50.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:01,028 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:01,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.50 ms. Allocated memory is still 88.1 MB. Free memory was 55.0 MB in the beginning and 65.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:01,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.37 ms. Allocated memory is still 88.1 MB. Free memory was 65.3 MB in the beginning and 63.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:01,030 INFO L168 Benchmark]: Boogie Preprocessor took 32.63 ms. Allocated memory is still 88.1 MB. Free memory was 63.7 MB in the beginning and 62.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:01,031 INFO L168 Benchmark]: RCFGBuilder took 376.11 ms. Allocated memory is still 88.1 MB. Free memory was 62.0 MB in the beginning and 46.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:01,032 INFO L168 Benchmark]: TraceAbstraction took 1627.24 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 45.6 MB in the beginning and 53.5 MB in the end (delta: -7.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:01,033 INFO L168 Benchmark]: Witness Printer took 65.70 ms. Allocated memory is still 111.1 MB. Free memory was 53.5 MB in the beginning and 50.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:01,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.50 ms. Allocated memory is still 88.1 MB. Free memory was 55.0 MB in the beginning and 65.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.37 ms. Allocated memory is still 88.1 MB. Free memory was 65.3 MB in the beginning and 63.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.63 ms. Allocated memory is still 88.1 MB. Free memory was 63.7 MB in the beginning and 62.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 376.11 ms. Allocated memory is still 88.1 MB. Free memory was 62.0 MB in the beginning and 46.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1627.24 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 45.6 MB in the beginning and 53.5 MB in the end (delta: -7.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * Witness Printer took 65.70 ms. Allocated memory is still 111.1 MB. Free memory was 53.5 MB in the beginning and 50.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i