./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina1f.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_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/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_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sina1f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/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_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/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 293b7193d9e00486e9d9bef6956f0c56f2572bdc ................................................................................................................................................................................................................................................................................................................................................... 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 00:22:10,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:22:10,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:22:10,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:22:10,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:22:10,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:22:10,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:22:10,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:22:10,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:22:10,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:22:10,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:22:10,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:22:10,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:22:10,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:22:10,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:22:10,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:22:10,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:22:10,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:22:10,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:22:10,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:22:10,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:22:10,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:22:10,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:22:10,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:22:10,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:22:10,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:22:10,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:22:10,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:22:10,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:22:10,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:22:10,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:22:10,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:22:10,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:22:10,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:22:10,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:22:10,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:22:10,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:22:10,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:22:10,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:22:10,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:22:10,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:22:10,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:22:10,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:22:10,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:22:10,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:22:10,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:22:10,744 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:22:10,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:22:10,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:22:10,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:22:10,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:22:10,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:22:10,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:22:10,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:22:10,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:22:10,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:22:10,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:22:10,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:22:10,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:22:10,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:22:10,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:22:10,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:22:10,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:22:10,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:22:10,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:22:10,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:22:10,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:22:10,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:22:10,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:22:10,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:22:10,758 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_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 293b7193d9e00486e9d9bef6956f0c56f2572bdc [2021-10-11 00:22:11,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:22:11,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:22:11,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:22:11,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:22:11,067 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:22:11,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/array-fpi/sina1f.c [2021-10-11 00:22:11,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/bin/uautomizer-Z5i5R5N3CC/data/ba0c97996/689851f1d90c4b00a8ded6fdec378c5b/FLAGa67305573 [2021-10-11 00:22:11,684 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:22:11,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/sv-benchmarks/c/array-fpi/sina1f.c [2021-10-11 00:22:11,692 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/bin/uautomizer-Z5i5R5N3CC/data/ba0c97996/689851f1d90c4b00a8ded6fdec378c5b/FLAGa67305573 [2021-10-11 00:22:12,059 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/bin/uautomizer-Z5i5R5N3CC/data/ba0c97996/689851f1d90c4b00a8ded6fdec378c5b [2021-10-11 00:22:12,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:22:12,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:22:12,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:12,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:22:12,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:22:12,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:12" (1/1) ... [2021-10-11 00:22:12,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68321b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12, skipping insertion in model container [2021-10-11 00:22:12,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:22:12" (1/1) ... [2021-10-11 00:22:12,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:22:12,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:22:12,269 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_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/sv-benchmarks/c/array-fpi/sina1f.c[589,602] [2021-10-11 00:22:12,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:12,301 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:22:12,312 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_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/sv-benchmarks/c/array-fpi/sina1f.c[589,602] [2021-10-11 00:22:12,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:22:12,334 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:22:12,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12 WrapperNode [2021-10-11 00:22:12,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:22:12,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:22:12,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:22:12,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:22:12,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12" (1/1) ... [2021-10-11 00:22:12,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12" (1/1) ... [2021-10-11 00:22:12,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:22:12,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:22:12,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:22:12,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:22:12,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12" (1/1) ... [2021-10-11 00:22:12,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12" (1/1) ... [2021-10-11 00:22:12,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12" (1/1) ... [2021-10-11 00:22:12,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12" (1/1) ... [2021-10-11 00:22:12,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12" (1/1) ... [2021-10-11 00:22:12,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12" (1/1) ... [2021-10-11 00:22:12,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12" (1/1) ... [2021-10-11 00:22:12,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:22:12,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:22:12,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:22:12,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:22:12,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/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 00:22:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:22:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:22:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:22:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 00:22:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:22:12,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:22:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:22:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:22:12,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:22:12,801 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-11 00:22:12,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:12 BoogieIcfgContainer [2021-10-11 00:22:12,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:22:12,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:22:12,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:22:12,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:22:12,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:22:12" (1/3) ... [2021-10-11 00:22:12,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e684e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:12, skipping insertion in model container [2021-10-11 00:22:12,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:22:12" (2/3) ... [2021-10-11 00:22:12,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e684e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:22:12, skipping insertion in model container [2021-10-11 00:22:12,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:12" (3/3) ... [2021-10-11 00:22:12,824 INFO L111 eAbstractionObserver]: Analyzing ICFG sina1f.c [2021-10-11 00:22:12,838 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:22:12,842 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:22:12,854 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:22:12,895 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:22:12,895 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:22:12,896 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:22:12,896 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:22:12,896 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:22:12,896 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:22:12,896 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:22:12,897 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:22:12,911 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-10-11 00:22:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:22:12,930 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:12,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:12,931 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:12,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:12,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2021-10-11 00:22:12,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:12,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840620162] [2021-10-11 00:22:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:13,173 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 00:22:13,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840620162] [2021-10-11 00:22:13,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:13,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:22:13,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524331489] [2021-10-11 00:22:13,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:22:13,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:13,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:22:13,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:22:13,206 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2021-10-11 00:22:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:13,226 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-10-11 00:22:13,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:22:13,227 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2021-10-11 00:22:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:13,247 INFO L225 Difference]: With dead ends: 38 [2021-10-11 00:22:13,249 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 00:22:13,252 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 00:22:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 00:22:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 00:22:13,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 00:22:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-11 00:22:13,295 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-10-11 00:22:13,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:13,296 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-11 00:22:13,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:22:13,297 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-11 00:22:13,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:22:13,298 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:13,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:13,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:22:13,299 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:13,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:13,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2021-10-11 00:22:13,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:13,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694773253] [2021-10-11 00:22:13,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:13,476 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 00:22:13,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694773253] [2021-10-11 00:22:13,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:13,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:22:13,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912715996] [2021-10-11 00:22:13,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:22:13,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:13,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:22:13,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:22:13,485 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 4 states. [2021-10-11 00:22:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:13,577 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-10-11 00:22:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:22:13,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 00:22:13,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:13,581 INFO L225 Difference]: With dead ends: 37 [2021-10-11 00:22:13,582 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 00:22:13,583 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 00:22:13,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 00:22:13,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2021-10-11 00:22:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 00:22:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-11 00:22:13,597 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-10-11 00:22:13,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:13,597 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-11 00:22:13,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:22:13,599 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-11 00:22:13,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:22:13,600 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:13,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:13,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:22:13,602 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:13,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:13,603 INFO L82 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2021-10-11 00:22:13,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:13,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896538068] [2021-10-11 00:22:13,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:22:13,670 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:22:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:22:13,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:22:13,722 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:22:13,722 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:22:13,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:22:13,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:22:13 BoogieIcfgContainer [2021-10-11 00:22:13,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:22:13,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:22:13,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:22:13,759 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:22:13,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:22:12" (3/4) ... [2021-10-11 00:22:13,762 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:22:13,806 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c6b1c2-85c5-4f75-b56a-5c1d19fb5c48/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:22:13,806 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:22:13,808 INFO L168 Benchmark]: Toolchain (without parser) took 1743.73 ms. Allocated memory was 117.4 MB in the beginning and 163.6 MB in the end (delta: 46.1 MB). Free memory was 87.9 MB in the beginning and 82.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:13,809 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 117.4 MB. Free memory is still 74.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:22:13,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.13 ms. Allocated memory was 117.4 MB in the beginning and 163.6 MB in the end (delta: 46.1 MB). Free memory was 87.6 MB in the beginning and 136.5 MB in the end (delta: -48.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:13,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.57 ms. Allocated memory is still 163.6 MB. Free memory was 136.5 MB in the beginning and 134.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:13,811 INFO L168 Benchmark]: Boogie Preprocessor took 27.27 ms. Allocated memory is still 163.6 MB. Free memory was 134.8 MB in the beginning and 133.9 MB in the end (delta: 967.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:13,812 INFO L168 Benchmark]: RCFGBuilder took 394.84 ms. Allocated memory is still 163.6 MB. Free memory was 133.9 MB in the beginning and 118.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:13,812 INFO L168 Benchmark]: TraceAbstraction took 953.65 ms. Allocated memory is still 163.6 MB. Free memory was 118.6 MB in the beginning and 85.1 MB in the end (delta: 33.5 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:13,813 INFO L168 Benchmark]: Witness Printer took 47.71 ms. Allocated memory is still 163.6 MB. Free memory was 85.1 MB in the beginning and 82.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:13,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 117.4 MB. Free memory is still 74.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.13 ms. Allocated memory was 117.4 MB in the beginning and 163.6 MB in the end (delta: 46.1 MB). Free memory was 87.6 MB in the beginning and 136.5 MB in the end (delta: -48.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.57 ms. Allocated memory is still 163.6 MB. Free memory was 136.5 MB in the beginning and 134.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.27 ms. Allocated memory is still 163.6 MB. Free memory was 134.8 MB in the beginning and 133.9 MB in the end (delta: 967.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 394.84 ms. Allocated memory is still 163.6 MB. Free memory was 133.9 MB in the beginning and 118.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 953.65 ms. Allocated memory is still 163.6 MB. Free memory was 118.6 MB in the beginning and 85.1 MB in the end (delta: 33.5 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Witness Printer took 47.71 ms. Allocated memory is still 163.6 MB. Free memory was 85.1 MB in the beginning and 82.4 MB in the end (delta: 2.7 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] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [N=1] [L32] COND TRUE i