./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn3f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer --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 3c4f39de7d4cdbe0c9103e2c499bf48f3ddaeb30 ........................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:19:31,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:19:31,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:19:31,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:19:31,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:19:31,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:19:31,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:19:31,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:19:31,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:19:31,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:19:31,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:19:31,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:19:31,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:19:31,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:19:31,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:19:31,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:19:31,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:19:31,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:19:31,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:19:31,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:19:31,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:19:31,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:19:31,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:19:31,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:19:31,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:19:31,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:19:31,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:19:31,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:19:31,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:19:31,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:19:31,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:19:31,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:19:31,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:19:31,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:19:31,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:19:31,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:19:31,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:19:31,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:19:31,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:19:31,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:19:31,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:19:31,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:19:31,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:19:31,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:19:31,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:19:31,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:19:31,970 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:19:31,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:19:31,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:19:31,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:19:31,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:19:31,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:19:31,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:19:31,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:19:31,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:19:31,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:19:31,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:19:31,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:19:31,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:19:31,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:19:31,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:19:31,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:19:31,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:19:31,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:19:31,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:19:31,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:19:31,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:19:31,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:19:31,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:19:31,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:19:31,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:19:31,975 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-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c4f39de7d4cdbe0c9103e2c499bf48f3ddaeb30 [2020-11-30 00:19:32,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:19:32,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:19:32,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:19:32,350 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:19:32,352 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:19:32,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/../../sv-benchmarks/c/array-fpi/eqn3f.c [2020-11-30 00:19:32,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/data/a916bccc2/32245b284b8946429392799c2768a6d5/FLAGe1c4d92c3 [2020-11-30 00:19:33,001 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:19:33,002 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/sv-benchmarks/c/array-fpi/eqn3f.c [2020-11-30 00:19:33,013 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/data/a916bccc2/32245b284b8946429392799c2768a6d5/FLAGe1c4d92c3 [2020-11-30 00:19:33,364 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/data/a916bccc2/32245b284b8946429392799c2768a6d5 [2020-11-30 00:19:33,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:19:33,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:19:33,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:19:33,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:19:33,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:19:33,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:19:33" (1/1) ... [2020-11-30 00:19:33,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6d4487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33, skipping insertion in model container [2020-11-30 00:19:33,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:19:33" (1/1) ... [2020-11-30 00:19:33,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:19:33,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:19:33,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:19:33,671 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:19:33,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:19:33,731 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:19:33,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33 WrapperNode [2020-11-30 00:19:33,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:19:33,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:19:33,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:19:33,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:19:33,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33" (1/1) ... [2020-11-30 00:19:33,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33" (1/1) ... [2020-11-30 00:19:33,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:19:33,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:19:33,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:19:33,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:19:33,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33" (1/1) ... [2020-11-30 00:19:33,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33" (1/1) ... [2020-11-30 00:19:33,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33" (1/1) ... [2020-11-30 00:19:33,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33" (1/1) ... [2020-11-30 00:19:33,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33" (1/1) ... [2020-11-30 00:19:33,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33" (1/1) ... [2020-11-30 00:19:33,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33" (1/1) ... [2020-11-30 00:19:33,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:19:33,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:19:33,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:19:33,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:19:33,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/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 [2020-11-30 00:19:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:19:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:19:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:19:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:19:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:19:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:19:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:19:34,390 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:19:34,391 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-30 00:19:34,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:19:34 BoogieIcfgContainer [2020-11-30 00:19:34,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:19:34,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:19:34,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:19:34,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:19:34,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:19:33" (1/3) ... [2020-11-30 00:19:34,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f64be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:19:34, skipping insertion in model container [2020-11-30 00:19:34,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:19:33" (2/3) ... [2020-11-30 00:19:34,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f64be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:19:34, skipping insertion in model container [2020-11-30 00:19:34,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:19:34" (3/3) ... [2020-11-30 00:19:34,405 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn3f.c [2020-11-30 00:19:34,418 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:19:34,423 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:19:34,437 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:19:34,478 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:19:34,478 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:19:34,478 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:19:34,478 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:19:34,479 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:19:34,479 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:19:34,479 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:19:34,479 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:19:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-30 00:19:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:19:34,507 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:34,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:34,508 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:34,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:34,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2020-11-30 00:19:34,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:34,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841535179] [2020-11-30 00:19:34,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:19:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:19:34,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841535179] [2020-11-30 00:19:34,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:19:34,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:19:34,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856992225] [2020-11-30 00:19:34,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:19:34,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:19:34,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:19:34,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:19:34,708 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-30 00:19:34,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:19:34,728 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-11-30 00:19:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:19:34,730 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-30 00:19:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:19:34,742 INFO L225 Difference]: With dead ends: 39 [2020-11-30 00:19:34,742 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 00:19:34,748 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 [2020-11-30 00:19:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 00:19:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-30 00:19:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-30 00:19:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-30 00:19:34,786 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-11-30 00:19:34,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:19:34,787 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-30 00:19:34,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:19:34,787 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-11-30 00:19:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:19:34,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:19:34,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:19:34,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:19:34,790 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:19:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:19:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2020-11-30 00:19:34,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:19:34,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822276925] [2020-11-30 00:19:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:19:34,844 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:19:34,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303417225] [2020-11-30 00:19:34,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/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 [2020-11-30 00:19:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:19:34,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:19:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:19:34,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:19:34,997 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:19:34,998 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:19:35,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 00:19:35,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:19:35 BoogieIcfgContainer [2020-11-30 00:19:35,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:19:35,251 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:19:35,251 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:19:35,252 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:19:35,252 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:19:34" (3/4) ... [2020-11-30 00:19:35,254 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:19:35,323 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3a23346d-d852-4958-b285-2850ae8ff7eb/bin/uautomizer/witness.graphml [2020-11-30 00:19:35,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:19:35,326 INFO L168 Benchmark]: Toolchain (without parser) took 1955.94 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 66.3 MB in the beginning and 51.7 MB in the end (delta: 14.5 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:35,326 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory is still 52.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:19:35,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.30 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 66.2 MB in the beginning and 102.8 MB in the end (delta: -36.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:35,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.15 ms. Allocated memory is still 125.8 MB. Free memory was 102.8 MB in the beginning and 101.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:35,329 INFO L168 Benchmark]: Boogie Preprocessor took 49.79 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 100.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:35,329 INFO L168 Benchmark]: RCFGBuilder took 551.80 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 85.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:35,330 INFO L168 Benchmark]: TraceAbstraction took 853.78 ms. Allocated memory is still 125.8 MB. Free memory was 85.3 MB in the beginning and 54.6 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:35,330 INFO L168 Benchmark]: Witness Printer took 72.07 ms. Allocated memory is still 125.8 MB. Free memory was 54.6 MB in the beginning and 51.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:35,337 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory is still 52.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.30 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 66.2 MB in the beginning and 102.8 MB in the end (delta: -36.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.15 ms. Allocated memory is still 125.8 MB. Free memory was 102.8 MB in the beginning and 101.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.79 ms. Allocated memory is still 125.8 MB. Free memory was 101.4 MB in the beginning and 100.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 551.80 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 85.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 853.78 ms. Allocated memory is still 125.8 MB. Free memory was 85.3 MB in the beginning and 54.6 MB in the end (delta: 30.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 72.07 ms. Allocated memory is still 125.8 MB. Free memory was 54.6 MB in the beginning and 51.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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 *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 6 [L32] b[0] = 10 [L34] i=1 VAL [N=1] [L34] COND FALSE !(i