./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ncompf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ncompf.c -s /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0502d3c21f5f4ac16678747b32ea8813b3ead6ef .................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-11-15 21:31:51,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:31:51,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:31:51,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:31:51,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:31:51,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:31:51,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:31:51,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:31:51,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:31:51,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:31:51,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:31:51,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:31:51,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:31:51,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:31:51,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:31:51,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:31:51,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:31:51,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:31:51,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:31:51,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:31:51,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:31:51,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:31:51,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:31:51,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:31:51,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:31:51,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:31:51,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:31:51,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:31:51,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:31:51,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:31:51,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:31:51,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:31:51,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:31:51,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:31:51,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:31:51,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:31:51,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:31:51,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:31:51,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:31:51,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:31:51,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:31:51,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 21:31:51,866 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:31:51,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:31:51,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:31:51,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:31:51,870 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:31:51,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:31:51,871 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:31:51,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:31:51,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:31:51,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:31:51,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:31:51,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:31:51,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:31:51,874 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:31:51,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:31:51,874 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:31:51,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:31:51,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:31:51,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:31:51,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:31:51,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:31:51,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:31:51,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:31:51,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:31:51,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:31:51,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:31:51,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:31:51,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:31:51,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0502d3c21f5f4ac16678747b32ea8813b3ead6ef [2019-11-15 21:31:51,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:31:51,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:31:51,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:31:51,937 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:31:51,937 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:31:51,938 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/../../sv-benchmarks/c/array-fpi/ncompf.c [2019-11-15 21:31:52,007 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/data/1b2bc40d1/1541c30b5f474bd6ad91eab9e921ee73/FLAGb6f0830cc [2019-11-15 21:31:52,402 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:31:52,405 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/sv-benchmarks/c/array-fpi/ncompf.c [2019-11-15 21:31:52,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/data/1b2bc40d1/1541c30b5f474bd6ad91eab9e921ee73/FLAGb6f0830cc [2019-11-15 21:31:52,795 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/data/1b2bc40d1/1541c30b5f474bd6ad91eab9e921ee73 [2019-11-15 21:31:52,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:31:52,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:31:52,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:31:52,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:31:52,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:31:52,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:31:52" (1/1) ... [2019-11-15 21:31:52,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b7ee661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:52, skipping insertion in model container [2019-11-15 21:31:52,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:31:52" (1/1) ... [2019-11-15 21:31:52,816 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:31:52,841 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:31:53,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:31:53,123 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:31:53,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:31:53,177 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:31:53,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53 WrapperNode [2019-11-15 21:31:53,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:31:53,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:31:53,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:31:53,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:31:53,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53" (1/1) ... [2019-11-15 21:31:53,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53" (1/1) ... [2019-11-15 21:31:53,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:31:53,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:31:53,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:31:53,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:31:53,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53" (1/1) ... [2019-11-15 21:31:53,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53" (1/1) ... [2019-11-15 21:31:53,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53" (1/1) ... [2019-11-15 21:31:53,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53" (1/1) ... [2019-11-15 21:31:53,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53" (1/1) ... [2019-11-15 21:31:53,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53" (1/1) ... [2019-11-15 21:31:53,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53" (1/1) ... [2019-11-15 21:31:53,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:31:53,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:31:53,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:31:53,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:31:53,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:31:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 21:31:53,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 21:31:53,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:31:53,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:31:53,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:31:53,598 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:31:53,598 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-15 21:31:53,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:31:53 BoogieIcfgContainer [2019-11-15 21:31:53,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:31:53,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:31:53,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:31:53,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:31:53,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:31:52" (1/3) ... [2019-11-15 21:31:53,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3331b000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:31:53, skipping insertion in model container [2019-11-15 21:31:53,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:31:53" (2/3) ... [2019-11-15 21:31:53,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3331b000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:31:53, skipping insertion in model container [2019-11-15 21:31:53,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:31:53" (3/3) ... [2019-11-15 21:31:53,606 INFO L109 eAbstractionObserver]: Analyzing ICFG ncompf.c [2019-11-15 21:31:53,613 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:31:53,618 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:31:53,627 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:31:53,645 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:31:53,645 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:31:53,646 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:31:53,646 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:31:53,646 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:31:53,646 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:31:53,646 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:31:53,647 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:31:53,660 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-15 21:31:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 21:31:53,667 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:31:53,667 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:31:53,669 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:31:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:31:53,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1553700779, now seen corresponding path program 1 times [2019-11-15 21:31:53,682 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:31:53,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511113582] [2019-11-15 21:31:53,683 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:31:53,683 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:31:53,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:31:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:31:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:31:53,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511113582] [2019-11-15 21:31:53,804 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:31:53,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:31:53,805 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787338088] [2019-11-15 21:31:53,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 21:31:53,809 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:31:53,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 21:31:53,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:31:53,822 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-11-15 21:31:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:31:53,837 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2019-11-15 21:31:53,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 21:31:53,838 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-15 21:31:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:31:53,847 INFO L225 Difference]: With dead ends: 39 [2019-11-15 21:31:53,847 INFO L226 Difference]: Without dead ends: 18 [2019-11-15 21:31:53,850 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:31:53,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-15 21:31:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-15 21:31:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 21:31:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-15 21:31:53,882 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2019-11-15 21:31:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:31:53,883 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-15 21:31:53,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 21:31:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-15 21:31:53,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 21:31:53,884 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:31:53,884 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:31:53,884 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:31:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:31:53,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1516529121, now seen corresponding path program 1 times [2019-11-15 21:31:53,885 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:31:53,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773521602] [2019-11-15 21:31:53,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:31:53,886 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:31:53,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:31:53,907 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:31:53,907 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125244063] [2019-11-15 21:31:53,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:31:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:31:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:31:54,060 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:31:54,061 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:31:54,265 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:31:54,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:31:54 BoogieIcfgContainer [2019-11-15 21:31:54,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:31:54,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:31:54,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:31:54,291 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:31:54,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:31:53" (3/4) ... [2019-11-15 21:31:54,294 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 21:31:54,336 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_54a4cca4-729a-42d0-a076-8b1ba33071cb/bin/uautomizer/witness.graphml [2019-11-15 21:31:54,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:31:54,339 INFO L168 Benchmark]: Toolchain (without parser) took 1540.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -151.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:31:54,339 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:31:54,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -216.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:31:54,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:31:54,341 INFO L168 Benchmark]: Boogie Preprocessor took 33.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:31:54,341 INFO L168 Benchmark]: RCFGBuilder took 336.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:31:54,342 INFO L168 Benchmark]: TraceAbstraction took 690.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:31:54,342 INFO L168 Benchmark]: Witness Printer took 46.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:31:54,345 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 380.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -216.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 336.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 690.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 11.5 GB. * Witness Printer took 46.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * 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: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long *a = malloc(sizeof(long long)*N); [L24] long long *b = malloc(sizeof(long long)*N); [L25] long long *c = malloc(sizeof(long long)*N); [L27] a[0] = 6 [L28] b[0] = 1 [L29] c[0] = 0 [L30] i=1 VAL [N=1] [L30] COND FALSE !(i