./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn5f.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_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn5f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/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 b8372a31944d45846edae8fd3de2e59236f8e911 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-28 03:08:57,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:08:57,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:08:57,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:08:57,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:08:58,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:08:58,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:08:58,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:08:58,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:08:58,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:08:58,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:08:58,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:08:58,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:08:58,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:08:58,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:08:58,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:08:58,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:08:58,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:08:58,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:08:58,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:08:58,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:08:58,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:08:58,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:08:58,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:08:58,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:08:58,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:08:58,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:08:58,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:08:58,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:08:58,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:08:58,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:08:58,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:08:58,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:08:58,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:08:58,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:08:58,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:08:58,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:08:58,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:08:58,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:08:58,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:08:58,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:08:58,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:08:58,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:08:58,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:08:58,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:08:58,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:08:58,146 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:08:58,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:08:58,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:08:58,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:08:58,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:08:58,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:08:58,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:08:58,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:08:58,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:08:58,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:08:58,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:08:58,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:08:58,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:08:58,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:08:58,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:08:58,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:08:58,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:08:58,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:08:58,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:08:58,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:08:58,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:08:58,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:08:58,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:08:58,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:08:58,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:08:58,164 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_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8372a31944d45846edae8fd3de2e59236f8e911 [2020-11-28 03:08:58,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:08:58,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:08:58,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:08:58,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:08:58,521 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:08:58,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/../../sv-benchmarks/c/array-fpi/eqn5f.c [2020-11-28 03:08:58,625 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/data/60658df17/1d683649a83b4036922a90abd38d0bac/FLAGa0859c143 [2020-11-28 03:08:59,159 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:08:59,160 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/sv-benchmarks/c/array-fpi/eqn5f.c [2020-11-28 03:08:59,168 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/data/60658df17/1d683649a83b4036922a90abd38d0bac/FLAGa0859c143 [2020-11-28 03:08:59,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/data/60658df17/1d683649a83b4036922a90abd38d0bac [2020-11-28 03:08:59,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:08:59,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:08:59,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:08:59,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:08:59,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:08:59,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:08:59" (1/1) ... [2020-11-28 03:08:59,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7060b3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59, skipping insertion in model container [2020-11-28 03:08:59,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:08:59" (1/1) ... [2020-11-28 03:08:59,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:08:59,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:08:59,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:08:59,791 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:08:59,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:08:59,833 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:08:59,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59 WrapperNode [2020-11-28 03:08:59,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:08:59,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:08:59,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:08:59,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:08:59,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59" (1/1) ... [2020-11-28 03:08:59,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59" (1/1) ... [2020-11-28 03:08:59,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:08:59,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:08:59,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:08:59,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:08:59,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59" (1/1) ... [2020-11-28 03:08:59,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59" (1/1) ... [2020-11-28 03:08:59,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59" (1/1) ... [2020-11-28 03:08:59,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59" (1/1) ... [2020-11-28 03:08:59,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59" (1/1) ... [2020-11-28 03:08:59,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59" (1/1) ... [2020-11-28 03:08:59,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59" (1/1) ... [2020-11-28 03:08:59,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:08:59,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:08:59,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:08:59,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:08:59,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/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 [2020-11-28 03:09:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:09:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:09:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:09:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:09:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:09:00,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:09:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:09:00,445 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:09:00,445 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 03:09:00,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:00 BoogieIcfgContainer [2020-11-28 03:09:00,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:09:00,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:09:00,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:09:00,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:09:00,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:08:59" (1/3) ... [2020-11-28 03:09:00,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d74aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:00, skipping insertion in model container [2020-11-28 03:09:00,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:59" (2/3) ... [2020-11-28 03:09:00,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d74aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:00, skipping insertion in model container [2020-11-28 03:09:00,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:00" (3/3) ... [2020-11-28 03:09:00,471 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn5f.c [2020-11-28 03:09:00,509 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:09:00,514 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:09:00,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:09:00,587 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:09:00,594 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:09:00,594 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:09:00,595 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:09:00,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:09:00,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:09:00,595 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:09:00,596 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:09:00,614 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-28 03:09:00,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:09:00,621 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:00,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:00,622 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:00,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2020-11-28 03:09:00,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:00,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296216140] [2020-11-28 03:09:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:00,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296216140] [2020-11-28 03:09:00,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:00,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:09:00,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248796392] [2020-11-28 03:09:00,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:09:00,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:00,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:09:00,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:09:00,838 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-28 03:09:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:00,859 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-11-28 03:09:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:09:00,861 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-28 03:09:00,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:00,872 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:09:00,872 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 03:09:00,876 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 [2020-11-28 03:09:00,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 03:09:00,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:09:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:09:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-28 03:09:00,933 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-11-28 03:09:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:00,933 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-28 03:09:00,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:09:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-11-28 03:09:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:09:00,934 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:00,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:00,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:09:00,935 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:00,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2020-11-28 03:09:00,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:00,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703729763] [2020-11-28 03:09:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:00,972 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:00,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412689677] [2020-11-28 03:09:00,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/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 [2020-11-28 03:09:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:01,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:09:01,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:01,257 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-11-28 03:09:01,258 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2020-11-28 03:09:01,259 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:09:01,273 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:09:01,284 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-28 03:09:01,285 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:15 [2020-11-28 03:09:01,390 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:01,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703729763] [2020-11-28 03:09:01,428 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:01,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412689677] [2020-11-28 03:09:01,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:01,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:09:01,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557957753] [2020-11-28 03:09:01,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:01,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:01,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:01,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:01,432 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-11-28 03:09:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:01,625 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-11-28 03:09:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:01,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:09:01,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:01,627 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:09:01,628 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 03:09:01,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:09:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 03:09:01,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-11-28 03:09:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:09:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-11-28 03:09:01,637 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-11-28 03:09:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:01,638 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-28 03:09:01,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-28 03:09:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:09:01,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:01,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:01,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:09:01,866 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:01,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:01,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2020-11-28 03:09:01,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:01,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045605067] [2020-11-28 03:09:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:01,895 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:01,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622948090] [2020-11-28 03:09:01,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:01,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:09:01,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:02,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045605067] [2020-11-28 03:09:02,042 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:02,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622948090] [2020-11-28 03:09:02,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:02,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:09:02,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142429889] [2020-11-28 03:09:02,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:02,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:02,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:02,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:02,046 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-11-28 03:09:02,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:02,216 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-11-28 03:09:02,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:02,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 03:09:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:02,218 INFO L225 Difference]: With dead ends: 49 [2020-11-28 03:09:02,218 INFO L226 Difference]: Without dead ends: 40 [2020-11-28 03:09:02,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:09:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-28 03:09:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2020-11-28 03:09:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:09:02,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-28 03:09:02,225 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2020-11-28 03:09:02,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:02,226 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-28 03:09:02,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:02,226 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-28 03:09:02,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:09:02,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:02,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:02,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:02,454 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:02,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:02,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2020-11-28 03:09:02,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:02,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944828726] [2020-11-28 03:09:02,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:02,497 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:02,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130672775] [2020-11-28 03:09:02,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:02,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:09:02,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:02,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944828726] [2020-11-28 03:09:02,601 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:02,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130672775] [2020-11-28 03:09:02,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:02,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 03:09:02,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040623190] [2020-11-28 03:09:02,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:02,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:02,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:02,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:02,604 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-11-28 03:09:02,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:02,734 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-28 03:09:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:09:02,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 03:09:02,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:02,736 INFO L225 Difference]: With dead ends: 44 [2020-11-28 03:09:02,736 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 03:09:02,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:09:02,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 03:09:02,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2020-11-28 03:09:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 03:09:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-28 03:09:02,743 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2020-11-28 03:09:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:02,743 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-28 03:09:02,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-28 03:09:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:09:02,744 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:02,744 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:02,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:02,945 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:02,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:02,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1608719470, now seen corresponding path program 1 times [2020-11-28 03:09:02,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:02,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368313888] [2020-11-28 03:09:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:02,978 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:02,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786867563] [2020-11-28 03:09:02,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:03,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:09:03,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:03,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368313888] [2020-11-28 03:09:03,153 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:03,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786867563] [2020-11-28 03:09:03,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:03,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:09:03,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630013730] [2020-11-28 03:09:03,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:09:03,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:03,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:09:03,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:03,156 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 6 states. [2020-11-28 03:09:03,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:03,275 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-11-28 03:09:03,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:09:03,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 03:09:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:03,282 INFO L225 Difference]: With dead ends: 41 [2020-11-28 03:09:03,282 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:09:03,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:09:03,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:09:03,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2020-11-28 03:09:03,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:09:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-28 03:09:03,287 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2020-11-28 03:09:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:03,288 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-28 03:09:03,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:09:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-28 03:09:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:09:03,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:03,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:03,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:03,502 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:03,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:03,502 INFO L82 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2020-11-28 03:09:03,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:03,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103270904] [2020-11-28 03:09:03,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:03,547 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:03,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103608466] [2020-11-28 03:09:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:03,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-28 03:09:03,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:03,652 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-28 03:09:03,655 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:09:03,666 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:09:03,675 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-11-28 03:09:03,675 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:09:03,688 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:09:03,688 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:09:03,689 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:19 [2020-11-28 03:09:03,795 INFO L350 Elim1Store]: treesize reduction 54, result has 46.0 percent of original size [2020-11-28 03:09:03,796 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 72 [2020-11-28 03:09:03,798 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:09:03,848 INFO L625 ElimStorePlain]: treesize reduction 27, result has 64.5 percent of original size [2020-11-28 03:09:03,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:03,852 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:09:03,853 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:49 [2020-11-28 03:09:03,854 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:03,888 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:03,922 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:03,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:04,126 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-11-28 03:09:04,127 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:04,180 INFO L441 ElimStorePlain]: Different costs {12=[v_prenex_3], 20=[|v_#memory_int_13|]} [2020-11-28 03:09:04,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 03:09:04,201 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-11-28 03:09:04,201 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 43 [2020-11-28 03:09:04,203 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:09:04,270 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:09:04,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 03:09:04,320 INFO L350 Elim1Store]: treesize reduction 17, result has 60.5 percent of original size [2020-11-28 03:09:04,321 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 85 [2020-11-28 03:09:04,323 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:09:04,440 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-11-28 03:09:04,441 INFO L625 ElimStorePlain]: treesize reduction 45, result has 72.6 percent of original size [2020-11-28 03:09:04,453 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2020-11-28 03:09:04,454 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:115, output treesize:119 [2020-11-28 03:09:05,829 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 50 [2020-11-28 03:09:09,702 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 54 [2020-11-28 03:09:09,720 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-28 03:09:09,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:09,755 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:09:09,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:09,810 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:09,836 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:09,843 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:09:09,863 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:09:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:10,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103270904] [2020-11-28 03:09:10,141 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:10,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103608466] [2020-11-28 03:09:10,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:10,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-28 03:09:10,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911005209] [2020-11-28 03:09:10,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:09:10,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:10,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:09:10,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=41, Unknown=1, NotChecked=0, Total=56 [2020-11-28 03:09:10,144 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 8 states. [2020-11-28 03:09:18,796 WARN L193 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-11-28 03:09:23,213 WARN L193 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-11-28 03:09:29,962 WARN L193 SmtUtils]: Spent 4.55 s on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-11-28 03:09:34,638 WARN L193 SmtUtils]: Spent 4.55 s on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-11-28 03:09:36,934 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-11-28 03:09:37,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:37,038 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-28 03:09:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:09:37,042 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-11-28 03:09:37,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:37,043 INFO L225 Difference]: With dead ends: 44 [2020-11-28 03:09:37,043 INFO L226 Difference]: Without dead ends: 42 [2020-11-28 03:09:37,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2020-11-28 03:09:37,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-28 03:09:37,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2020-11-28 03:09:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 03:09:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-11-28 03:09:37,052 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-11-28 03:09:37,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:37,052 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-11-28 03:09:37,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:09:37,052 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-11-28 03:09:37,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:09:37,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:37,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:37,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 03:09:37,254 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:37,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1267903976, now seen corresponding path program 2 times [2020-11-28 03:09:37,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:37,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306062128] [2020-11-28 03:09:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:37,283 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:37,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521159158] [2020-11-28 03:09:37,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:37,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:09:37,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:09:37,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:09:37,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:37,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:37,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306062128] [2020-11-28 03:09:37,428 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:37,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521159158] [2020-11-28 03:09:37,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:37,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:09:37,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189224299] [2020-11-28 03:09:37,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:09:37,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:37,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:09:37,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:09:37,430 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-11-28 03:09:37,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:37,756 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-11-28 03:09:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:09:37,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-28 03:09:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:37,759 INFO L225 Difference]: With dead ends: 61 [2020-11-28 03:09:37,760 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 03:09:37,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:09:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 03:09:37,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-28 03:09:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 03:09:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-11-28 03:09:37,769 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2020-11-28 03:09:37,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:37,769 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-11-28 03:09:37,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:09:37,769 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-11-28 03:09:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:09:37,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:37,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:37,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:37,986 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:37,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 3 times [2020-11-28 03:09:37,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:37,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276246099] [2020-11-28 03:09:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:38,000 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:38,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138472143] [2020-11-28 03:09:38,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:38,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 03:09:38,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:09:38,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:09:38,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:38,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276246099] [2020-11-28 03:09:38,165 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:38,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138472143] [2020-11-28 03:09:38,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:38,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:09:38,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660456170] [2020-11-28 03:09:38,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:09:38,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:38,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:09:38,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:09:38,167 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2020-11-28 03:09:38,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:38,549 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-11-28 03:09:38,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:09:38,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-28 03:09:38,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:38,554 INFO L225 Difference]: With dead ends: 56 [2020-11-28 03:09:38,554 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 03:09:38,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:09:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 03:09:38,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2020-11-28 03:09:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:09:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-11-28 03:09:38,562 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2020-11-28 03:09:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:38,563 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-11-28 03:09:38,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:09:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-11-28 03:09:38,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:09:38,564 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:38,564 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:38,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:38,774 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:38,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:38,775 INFO L82 PathProgramCache]: Analyzing trace with hash 858128078, now seen corresponding path program 1 times [2020-11-28 03:09:38,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:38,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423230208] [2020-11-28 03:09:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:38,799 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:38,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016888292] [2020-11-28 03:09:38,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:38,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:38,908 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:38,941 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:38,941 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:09:39,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-28 03:09:39,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:09:39 BoogieIcfgContainer [2020-11-28 03:09:39,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:09:39,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:09:39,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:09:39,205 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:09:39,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:00" (3/4) ... [2020-11-28 03:09:39,208 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:09:39,271 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2ddb513d-f6d2-4b2e-bd13-b34bb0b9bcac/bin/uautomizer/witness.graphml [2020-11-28 03:09:39,272 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:09:39,273 INFO L168 Benchmark]: Toolchain (without parser) took 39757.81 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 66.4 MB in the beginning and 87.1 MB in the end (delta: -20.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,273 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 94.4 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:39,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.51 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 66.3 MB in the beginning and 90.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,275 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.08 ms. Allocated memory is still 113.2 MB. Free memory was 90.7 MB in the beginning and 89.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,275 INFO L168 Benchmark]: Boogie Preprocessor took 34.59 ms. Allocated memory is still 113.2 MB. Free memory was 89.3 MB in the beginning and 88.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:39,276 INFO L168 Benchmark]: RCFGBuilder took 529.20 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 73.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,277 INFO L168 Benchmark]: TraceAbstraction took 38741.87 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 72.5 MB in the beginning and 89.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,278 INFO L168 Benchmark]: Witness Printer took 66.75 ms. Allocated memory is still 136.3 MB. Free memory was 89.2 MB in the beginning and 87.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 94.4 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.51 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 66.3 MB in the beginning and 90.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.08 ms. Allocated memory is still 113.2 MB. Free memory was 90.7 MB in the beginning and 89.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.59 ms. Allocated memory is still 113.2 MB. Free memory was 89.3 MB in the beginning and 88.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 529.20 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 73.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 38741.87 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 72.5 MB in the beginning and 89.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Witness Printer took 66.75 ms. Allocated memory is still 136.3 MB. Free memory was 89.2 MB in the beginning and 87.1 MB in the end (delta: 2.1 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: 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=2] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 1 [L32] b[0] = 1 [L33] i=1 VAL [N=2] [L33] COND TRUE i