./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.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_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/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 149c8585f8a0507ccdc7ff098e5c95b93f9a1ba8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2020-11-29 23:34:02,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:34:02,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:34:02,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:34:02,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:34:02,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:34:02,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:34:02,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:34:02,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:34:02,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:34:02,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:34:02,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:34:02,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:34:02,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:34:02,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:34:02,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:34:02,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:34:02,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:34:02,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:34:02,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:34:02,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:34:02,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:34:02,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:34:02,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:34:02,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:34:02,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:34:02,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:34:02,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:34:02,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:34:02,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:34:02,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:34:02,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:34:02,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:34:02,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:34:02,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:34:02,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:34:02,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:34:02,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:34:02,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:34:02,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:34:02,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:34:02,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:34:02,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:34:02,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:34:02,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:34:02,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:34:02,319 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:34:02,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:34:02,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:34:02,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:34:02,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:34:02,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:34:02,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:34:02,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:34:02,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:34:02,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:34:02,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:34:02,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:34:02,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:34:02,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:34:02,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:34:02,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:34:02,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:34:02,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:34:02,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:34:02,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:34:02,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:34:02,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:34:02,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:34:02,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:34:02,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:34:02,324 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_9d36faed-e635-46d9-96d2-a719f87ac4bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 149c8585f8a0507ccdc7ff098e5c95b93f9a1ba8 [2020-11-29 23:34:02,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:34:02,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:34:02,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:34:02,594 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:34:02,596 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:34:02,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2020-11-29 23:34:02,688 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/data/687d75330/259e6102a89c43b09f1dd04533712631/FLAGf0a1bb349 [2020-11-29 23:34:03,205 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:34:03,206 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2020-11-29 23:34:03,212 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/data/687d75330/259e6102a89c43b09f1dd04533712631/FLAGf0a1bb349 [2020-11-29 23:34:03,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/data/687d75330/259e6102a89c43b09f1dd04533712631 [2020-11-29 23:34:03,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:34:03,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:34:03,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:34:03,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:34:03,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:34:03,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:34:03" (1/1) ... [2020-11-29 23:34:03,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41568961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03, skipping insertion in model container [2020-11-29 23:34:03,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:34:03" (1/1) ... [2020-11-29 23:34:03,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:34:03,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:34:03,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:34:03,830 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:34:03,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:34:03,881 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:34:03,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03 WrapperNode [2020-11-29 23:34:03,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:34:03,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:34:03,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:34:03,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:34:03,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03" (1/1) ... [2020-11-29 23:34:03,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03" (1/1) ... [2020-11-29 23:34:03,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:34:03,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:34:03,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:34:03,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:34:03,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03" (1/1) ... [2020-11-29 23:34:03,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03" (1/1) ... [2020-11-29 23:34:03,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03" (1/1) ... [2020-11-29 23:34:03,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03" (1/1) ... [2020-11-29 23:34:03,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03" (1/1) ... [2020-11-29 23:34:03,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03" (1/1) ... [2020-11-29 23:34:03,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03" (1/1) ... [2020-11-29 23:34:03,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:34:03,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:34:03,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:34:03,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:34:03,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/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 [2020-11-29 23:34:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:34:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:34:04,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:34:04,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:34:04,448 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:34:04,448 INFO L298 CfgBuilder]: Removed 38 assume(true) statements. [2020-11-29 23:34:04,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:34:04 BoogieIcfgContainer [2020-11-29 23:34:04,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:34:04,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:34:04,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:34:04,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:34:04,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:34:03" (1/3) ... [2020-11-29 23:34:04,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518001c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:34:04, skipping insertion in model container [2020-11-29 23:34:04,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:03" (2/3) ... [2020-11-29 23:34:04,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518001c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:34:04, skipping insertion in model container [2020-11-29 23:34:04,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:34:04" (3/3) ... [2020-11-29 23:34:04,458 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound2.c [2020-11-29 23:34:04,470 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:34:04,474 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 23:34:04,486 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 23:34:04,511 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:34:04,511 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:34:04,511 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:34:04,511 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:34:04,512 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:34:04,512 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:34:04,512 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:34:04,512 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:34:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-29 23:34:04,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:34:04,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:04,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:04,533 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:04,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:04,539 INFO L82 PathProgramCache]: Analyzing trace with hash -141659761, now seen corresponding path program 1 times [2020-11-29 23:34:04,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:04,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094226639] [2020-11-29 23:34:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:04,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094226639] [2020-11-29 23:34:04,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:04,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:34:04,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801391639] [2020-11-29 23:34:04,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:34:04,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:04,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:34:04,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:34:04,695 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-29 23:34:04,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:04,714 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-11-29 23:34:04,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:34:04,716 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 23:34:04,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:04,724 INFO L225 Difference]: With dead ends: 83 [2020-11-29 23:34:04,725 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 23:34:04,728 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 [2020-11-29 23:34:04,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 23:34:04,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 23:34:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 23:34:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-29 23:34:04,761 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 13 [2020-11-29 23:34:04,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:04,762 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-29 23:34:04,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:34:04,762 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-29 23:34:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 23:34:04,763 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:04,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:04,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:34:04,763 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:04,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:04,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1057766562, now seen corresponding path program 1 times [2020-11-29 23:34:04,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:04,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741423713] [2020-11-29 23:34:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:04,829 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:04,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134189324] [2020-11-29 23:34:04,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/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 [2020-11-29 23:34:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:04,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:34:04,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:04,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741423713] [2020-11-29 23:34:04,978 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:04,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134189324] [2020-11-29 23:34:04,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:04,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:34:04,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460362903] [2020-11-29 23:34:04,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:34:04,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:04,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:34:04,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:34:04,981 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2020-11-29 23:34:05,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:05,021 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-11-29 23:34:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:34:05,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 23:34:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:05,025 INFO L225 Difference]: With dead ends: 49 [2020-11-29 23:34:05,025 INFO L226 Difference]: Without dead ends: 41 [2020-11-29 23:34:05,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:34:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-29 23:34:05,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-29 23:34:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 23:34:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-11-29 23:34:05,033 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 14 [2020-11-29 23:34:05,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:05,033 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-11-29 23:34:05,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:34:05,034 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-11-29 23:34:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:34:05,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:05,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:05,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 23:34:05,235 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:05,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:05,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1568674210, now seen corresponding path program 1 times [2020-11-29 23:34:05,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:05,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005450919] [2020-11-29 23:34:05,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:05,267 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:05,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968613666] [2020-11-29 23:34:05,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/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 [2020-11-29 23:34:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:05,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:34:05,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:05,379 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:34:05,380 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:05,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005450919] [2020-11-29 23:34:05,406 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:05,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968613666] [2020-11-29 23:34:05,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:05,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:34:05,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021070103] [2020-11-29 23:34:05,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:34:05,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:05,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:34:05,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:34:05,409 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2020-11-29 23:34:05,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:05,608 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-11-29 23:34:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:34:05,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 23:34:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:05,612 INFO L225 Difference]: With dead ends: 69 [2020-11-29 23:34:05,612 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 23:34:05,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:34:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 23:34:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2020-11-29 23:34:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 23:34:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-11-29 23:34:05,625 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 15 [2020-11-29 23:34:05,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:05,625 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-11-29 23:34:05,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:34:05,626 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-11-29 23:34:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:34:05,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:05,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:05,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:05,843 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:05,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:05,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1384108475, now seen corresponding path program 1 times [2020-11-29 23:34:05,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:05,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031157287] [2020-11-29 23:34:05,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:05,869 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:05,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318139957] [2020-11-29 23:34:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/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 [2020-11-29 23:34:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:05,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 23:34:05,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:05,962 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:34:05,963 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:06,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031157287] [2020-11-29 23:34:06,034 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:06,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318139957] [2020-11-29 23:34:06,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:06,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:34:06,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208415774] [2020-11-29 23:34:06,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:34:06,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:06,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:34:06,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:34:06,037 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 7 states. [2020-11-29 23:34:06,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:06,342 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2020-11-29 23:34:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:34:06,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-29 23:34:06,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:06,345 INFO L225 Difference]: With dead ends: 80 [2020-11-29 23:34:06,345 INFO L226 Difference]: Without dead ends: 78 [2020-11-29 23:34:06,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:34:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-29 23:34:06,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 45. [2020-11-29 23:34:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 23:34:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-11-29 23:34:06,362 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 16 [2020-11-29 23:34:06,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:06,362 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-11-29 23:34:06,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:34:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-11-29 23:34:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 23:34:06,365 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:06,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:06,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:06,583 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:06,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:06,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1311429602, now seen corresponding path program 1 times [2020-11-29 23:34:06,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:06,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955631964] [2020-11-29 23:34:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:06,597 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:06,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807807940] [2020-11-29 23:34:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/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 [2020-11-29 23:34:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:06,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 23:34:06,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:06,699 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:34:06,699 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:06,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955631964] [2020-11-29 23:34:06,752 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:06,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807807940] [2020-11-29 23:34:06,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:06,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:34:06,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496031271] [2020-11-29 23:34:06,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:34:06,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:06,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:34:06,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:34:06,755 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-11-29 23:34:06,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:06,939 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-11-29 23:34:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:34:06,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-29 23:34:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:06,943 INFO L225 Difference]: With dead ends: 64 [2020-11-29 23:34:06,943 INFO L226 Difference]: Without dead ends: 62 [2020-11-29 23:34:06,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:34:06,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-29 23:34:06,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2020-11-29 23:34:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 23:34:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-11-29 23:34:06,956 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 18 [2020-11-29 23:34:06,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:06,956 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-11-29 23:34:06,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:34:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-11-29 23:34:06,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 23:34:06,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:06,958 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:07,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:07,171 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:07,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:07,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1976639322, now seen corresponding path program 1 times [2020-11-29 23:34:07,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:07,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022997440] [2020-11-29 23:34:07,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:07,183 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:07,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547225499] [2020-11-29 23:34:07,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/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 [2020-11-29 23:34:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:07,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:34:07,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:07,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022997440] [2020-11-29 23:34:07,287 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:07,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547225499] [2020-11-29 23:34:07,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:07,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:34:07,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986119348] [2020-11-29 23:34:07,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:34:07,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:07,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:34:07,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:34:07,289 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 5 states. [2020-11-29 23:34:07,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:07,324 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2020-11-29 23:34:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:34:07,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-29 23:34:07,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:07,328 INFO L225 Difference]: With dead ends: 85 [2020-11-29 23:34:07,328 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 23:34:07,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:34:07,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 23:34:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-29 23:34:07,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 23:34:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-11-29 23:34:07,339 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 20 [2020-11-29 23:34:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:07,340 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-11-29 23:34:07,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:34:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-11-29 23:34:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 23:34:07,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:07,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:07,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 23:34:07,552 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:07,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1858241727, now seen corresponding path program 1 times [2020-11-29 23:34:07,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:07,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501335161] [2020-11-29 23:34:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:07,564 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:07,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668287997] [2020-11-29 23:34:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/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 [2020-11-29 23:34:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:07,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 23:34:07,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:07,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501335161] [2020-11-29 23:34:07,711 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:07,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668287997] [2020-11-29 23:34:07,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:07,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:34:07,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807330213] [2020-11-29 23:34:07,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:34:07,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:07,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:34:07,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:34:07,714 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 4 states. [2020-11-29 23:34:07,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:07,814 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-11-29 23:34:07,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:34:07,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-29 23:34:07,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:07,815 INFO L225 Difference]: With dead ends: 62 [2020-11-29 23:34:07,815 INFO L226 Difference]: Without dead ends: 60 [2020-11-29 23:34:07,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:34:07,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-29 23:34:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-11-29 23:34:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 23:34:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-11-29 23:34:07,823 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-11-29 23:34:07,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:07,827 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-11-29 23:34:07,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:34:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-11-29 23:34:07,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 23:34:07,829 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:07,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:08,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:08,030 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:08,031 INFO L82 PathProgramCache]: Analyzing trace with hash 936283940, now seen corresponding path program 1 times [2020-11-29 23:34:08,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:08,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261850435] [2020-11-29 23:34:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:08,039 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:08,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463463093] [2020-11-29 23:34:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/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 [2020-11-29 23:34:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:08,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 23:34:08,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:08,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261850435] [2020-11-29 23:34:08,187 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:08,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463463093] [2020-11-29 23:34:08,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:08,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:34:08,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359039777] [2020-11-29 23:34:08,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:34:08,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:08,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:34:08,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:34:08,189 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 5 states. [2020-11-29 23:34:08,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:08,305 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-11-29 23:34:08,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:34:08,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-29 23:34:08,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:08,307 INFO L225 Difference]: With dead ends: 67 [2020-11-29 23:34:08,307 INFO L226 Difference]: Without dead ends: 65 [2020-11-29 23:34:08,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:34:08,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-29 23:34:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2020-11-29 23:34:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 23:34:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-11-29 23:34:08,316 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 22 [2020-11-29 23:34:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:08,316 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-11-29 23:34:08,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:34:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-11-29 23:34:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 23:34:08,317 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:08,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:08,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:08,532 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:08,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1931900048, now seen corresponding path program 1 times [2020-11-29 23:34:08,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:08,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726513928] [2020-11-29 23:34:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:08,544 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:08,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140772327] [2020-11-29 23:34:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/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 [2020-11-29 23:34:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:08,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:34:08,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:08,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726513928] [2020-11-29 23:34:08,685 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:08,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140772327] [2020-11-29 23:34:08,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:34:08,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:34:08,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71972698] [2020-11-29 23:34:08,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:34:08,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:08,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:34:08,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:34:08,689 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 6 states. [2020-11-29 23:34:08,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:08,741 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-11-29 23:34:08,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:34:08,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-29 23:34:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:08,743 INFO L225 Difference]: With dead ends: 78 [2020-11-29 23:34:08,743 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 23:34:08,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:34:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 23:34:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-11-29 23:34:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 23:34:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-11-29 23:34:08,749 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 26 [2020-11-29 23:34:08,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:08,749 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-29 23:34:08,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:34:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-11-29 23:34:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 23:34:08,751 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:08,751 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:08,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 23:34:08,952 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:08,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1177713046, now seen corresponding path program 1 times [2020-11-29 23:34:08,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:08,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195734522] [2020-11-29 23:34:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:08,972 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:08,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801199455] [2020-11-29 23:34:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:34:09,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:34:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:34:09,173 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:34:09,206 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:34:09,206 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:34:09,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:09,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:34:09 BoogieIcfgContainer [2020-11-29 23:34:09,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:34:09,489 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:34:09,489 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:34:09,489 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:34:09,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:34:04" (3/4) ... [2020-11-29 23:34:09,492 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:34:09,555 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9d36faed-e635-46d9-96d2-a719f87ac4bb/bin/uautomizer/witness.graphml [2020-11-29 23:34:09,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:34:09,557 INFO L168 Benchmark]: Toolchain (without parser) took 5959.17 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 57.9 MB in the beginning and 56.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:09,558 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 65.8 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:34:09,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.67 ms. Allocated memory is still 90.2 MB. Free memory was 57.7 MB in the beginning and 67.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:09,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.29 ms. Allocated memory is still 90.2 MB. Free memory was 67.8 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:09,562 INFO L168 Benchmark]: Boogie Preprocessor took 23.95 ms. Allocated memory is still 90.2 MB. Free memory was 66.1 MB in the beginning and 65.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:09,562 INFO L168 Benchmark]: RCFGBuilder took 485.80 ms. Allocated memory is still 90.2 MB. Free memory was 64.5 MB in the beginning and 46.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:09,563 INFO L168 Benchmark]: TraceAbstraction took 5036.75 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 46.5 MB in the beginning and 59.8 MB in the end (delta: -13.3 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:09,564 INFO L168 Benchmark]: Witness Printer took 66.74 ms. Allocated memory is still 115.3 MB. Free memory was 59.8 MB in the beginning and 56.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:09,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 65.8 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.67 ms. Allocated memory is still 90.2 MB. Free memory was 57.7 MB in the beginning and 67.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.29 ms. Allocated memory is still 90.2 MB. Free memory was 67.8 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.95 ms. Allocated memory is still 90.2 MB. Free memory was 66.1 MB in the beginning and 65.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 485.80 ms. Allocated memory is still 90.2 MB. Free memory was 64.5 MB in the beginning and 46.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5036.75 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 46.5 MB in the beginning and 59.8 MB in the end (delta: -13.3 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Witness Printer took 66.74 ms. Allocated memory is still 115.3 MB. Free memory was 59.8 MB in the beginning and 56.6 MB in the end (delta: 3.1 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: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L40] EXPR counter++ VAL [counter=1] [L40] COND TRUE counter++<2 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [counter=1] [L46] EXPR counter++ VAL [counter=2] [L46] COND TRUE counter++<2 [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L51] COND TRUE !(c >= b) VAL [counter=2] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [counter=2] [L40] EXPR counter++ VAL [counter=3] [L40] COND FALSE !(counter++<2) [L11] COND TRUE !(cond) VAL [counter=3] [L4] __assert_fail("0", "egcd2-ll.c", 4, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 350 SDslu, 498 SDs, 0 SdLazy, 303 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 76 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 14484 SizeOfPredicates, 43 NumberOfNonLiveVariables, 885 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 4/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...