./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/egcd3-ll.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_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd3-ll.c -s /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bace92c84a29a0ed8ee50bd89ab369ef6b4277b3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:30:12,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:30:12,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:30:12,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:30:12,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:30:12,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:30:12,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:30:12,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:30:12,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:30:12,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:30:12,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:30:12,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:30:12,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:30:12,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:30:12,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:30:12,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:30:12,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:30:12,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:30:12,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:30:12,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:30:12,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:30:12,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:30:12,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:30:12,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:30:12,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:30:12,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:30:12,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:30:12,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:30:12,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:30:12,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:30:12,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:30:12,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:30:12,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:30:12,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:30:12,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:30:12,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:30:12,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:30:12,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:30:12,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:30:12,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:30:12,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:30:12,390 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:30:12,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:30:12,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:30:12,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:30:12,441 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:30:12,441 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:30:12,441 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:30:12,441 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:30:12,441 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:30:12,442 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:30:12,442 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:30:12,443 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:30:12,443 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:30:12,444 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:30:12,444 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:30:12,444 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:30:12,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:30:12,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:30:12,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:30:12,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:30:12,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:30:12,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:30:12,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:30:12,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:30:12,447 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:30:12,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:30:12,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:30:12,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:30:12,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:30:12,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:30:12,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:30:12,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:30:12,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:12,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:30:12,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:30:12,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:30:12,451 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:30:12,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:30:12,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:30:12,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:30:12,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:30:12,453 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bace92c84a29a0ed8ee50bd89ab369ef6b4277b3 [2020-11-28 07:30:12,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:30:12,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:30:12,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:30:12,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:30:12,824 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:30:12,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/../../sv-benchmarks/c/nla-digbench/egcd3-ll.c [2020-11-28 07:30:12,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/data/f5ea63180/57dbab2640ce48e7ba67c506ba4280c2/FLAG51cc52c63 [2020-11-28 07:30:13,414 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:30:13,414 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/sv-benchmarks/c/nla-digbench/egcd3-ll.c [2020-11-28 07:30:13,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/data/f5ea63180/57dbab2640ce48e7ba67c506ba4280c2/FLAG51cc52c63 [2020-11-28 07:30:13,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/data/f5ea63180/57dbab2640ce48e7ba67c506ba4280c2 [2020-11-28 07:30:13,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:30:13,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:30:13,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:13,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:30:13,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:30:13,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:13" (1/1) ... [2020-11-28 07:30:13,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6805ba57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:13, skipping insertion in model container [2020-11-28 07:30:13,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:13" (1/1) ... [2020-11-28 07:30:13,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:30:13,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:30:14,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:14,056 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:30:14,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:14,089 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:30:14,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14 WrapperNode [2020-11-28 07:30:14,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:14,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:14,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:30:14,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:30:14,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:14,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:30:14,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:30:14,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:30:14,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... [2020-11-28 07:30:14,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:30:14,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:30:14,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:30:14,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:30:14,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/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 07:30:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:30:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:30:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:30:14,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:30:14,824 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:30:14,824 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-28 07:30:14,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:14 BoogieIcfgContainer [2020-11-28 07:30:14,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:30:14,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:30:14,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:30:14,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:30:14,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:30:13" (1/3) ... [2020-11-28 07:30:14,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c04a06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:14, skipping insertion in model container [2020-11-28 07:30:14,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:14" (2/3) ... [2020-11-28 07:30:14,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c04a06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:14, skipping insertion in model container [2020-11-28 07:30:14,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:14" (3/3) ... [2020-11-28 07:30:14,836 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll.c [2020-11-28 07:30:14,847 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:30:14,851 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-28 07:30:14,863 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-28 07:30:14,886 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:30:14,886 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:30:14,886 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:30:14,886 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:30:14,886 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:30:14,887 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:30:14,887 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:30:14,887 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:30:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-28 07:30:14,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:30:14,907 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:14,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:30:14,908 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:14,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:14,914 INFO L82 PathProgramCache]: Analyzing trace with hash 165784030, now seen corresponding path program 1 times [2020-11-28 07:30:14,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:14,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682598879] [2020-11-28 07:30:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:15,060 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 07:30:15,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682598879] [2020-11-28 07:30:15,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:15,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:15,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489487237] [2020-11-28 07:30:15,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:30:15,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:15,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:30:15,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:30:15,083 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-11-28 07:30:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:15,101 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2020-11-28 07:30:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:30:15,103 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-28 07:30:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:15,112 INFO L225 Difference]: With dead ends: 59 [2020-11-28 07:30:15,112 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 07:30:15,115 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 07:30:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 07:30:15,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-28 07:30:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 07:30:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-11-28 07:30:15,146 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 5 [2020-11-28 07:30:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:15,146 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-11-28 07:30:15,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:30:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-11-28 07:30:15,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:30:15,147 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:15,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:30:15,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:30:15,148 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash 739172581, now seen corresponding path program 1 times [2020-11-28 07:30:15,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:15,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614269391] [2020-11-28 07:30:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:15,168 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:30:15,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356678582] [2020-11-28 07:30:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/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 07:30:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:15,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:30:15,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:15,287 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 07:30:15,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:15,292 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 07:30:15,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614269391] [2020-11-28 07:30:15,293 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:30:15,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356678582] [2020-11-28 07:30:15,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:15,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:30:15,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610940694] [2020-11-28 07:30:15,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:15,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:15,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:15,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:15,297 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 3 states. [2020-11-28 07:30:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:15,395 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2020-11-28 07:30:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:15,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:30:15,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:15,397 INFO L225 Difference]: With dead ends: 55 [2020-11-28 07:30:15,397 INFO L226 Difference]: Without dead ends: 51 [2020-11-28 07:30:15,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:15,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-28 07:30:15,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30. [2020-11-28 07:30:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 07:30:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-11-28 07:30:15,410 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 6 [2020-11-28 07:30:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:15,412 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-11-28 07:30:15,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:15,413 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-11-28 07:30:15,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:30:15,413 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:15,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:15,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:30:15,644 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:15,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:15,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1658141534, now seen corresponding path program 1 times [2020-11-28 07:30:15,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:15,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711636786] [2020-11-28 07:30:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:15,663 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:30:15,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740559625] [2020-11-28 07:30:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/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 07:30:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:15,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 07:30:15,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:15,833 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 07:30:15,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:15,848 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:30:15,865 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 07:30:15,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711636786] [2020-11-28 07:30:15,865 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:30:15,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740559625] [2020-11-28 07:30:15,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:15,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:30:15,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811074530] [2020-11-28 07:30:15,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:30:15,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:15,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:30:15,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:30:15,868 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2020-11-28 07:30:15,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:15,994 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-11-28 07:30:15,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:30:15,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-28 07:30:15,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:15,998 INFO L225 Difference]: With dead ends: 51 [2020-11-28 07:30:15,998 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 07:30:15,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:15,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 07:30:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2020-11-28 07:30:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 07:30:16,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-11-28 07:30:16,006 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 8 [2020-11-28 07:30:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:16,007 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-11-28 07:30:16,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:30:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-11-28 07:30:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:30:16,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:16,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:16,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:16,236 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:16,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:16,237 INFO L82 PathProgramCache]: Analyzing trace with hash 41335009, now seen corresponding path program 1 times [2020-11-28 07:30:16,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:16,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477549699] [2020-11-28 07:30:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:16,253 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:30:16,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825881820] [2020-11-28 07:30:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/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 07:30:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:16,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:30:16,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:16,356 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 07:30:16,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:16,369 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:30:16,387 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 07:30:16,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477549699] [2020-11-28 07:30:16,388 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:30:16,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825881820] [2020-11-28 07:30:16,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:16,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:30:16,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015127263] [2020-11-28 07:30:16,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:30:16,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:16,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:30:16,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:30:16,390 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-11-28 07:30:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:16,508 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-11-28 07:30:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:30:16,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:30:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:16,511 INFO L225 Difference]: With dead ends: 49 [2020-11-28 07:30:16,511 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 07:30:16,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:16,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 07:30:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2020-11-28 07:30:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 07:30:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-11-28 07:30:16,518 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 10 [2020-11-28 07:30:16,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:16,519 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-28 07:30:16,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:30:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-11-28 07:30:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:30:16,519 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:16,520 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:16,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:16,724 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:16,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:16,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1188903194, now seen corresponding path program 1 times [2020-11-28 07:30:16,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:16,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157366041] [2020-11-28 07:30:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:16,738 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:30:16,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742200225] [2020-11-28 07:30:16,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/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 07:30:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:16,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:30:16,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:16,829 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 07:30:16,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:16,839 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 07:30:16,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157366041] [2020-11-28 07:30:16,839 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:30:16,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742200225] [2020-11-28 07:30:16,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [501708837] [2020-11-28 07:30:16,863 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-28 07:30:16,863 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:30:16,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:30:16,874 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:30:16,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:30:17,019 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:30:18,145 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:30:18,629 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 55 [2020-11-28 07:30:19,160 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 93 [2020-11-28 07:30:19,679 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 92 [2020-11-28 07:30:20,014 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 36 [2020-11-28 07:30:20,405 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 54 [2020-11-28 07:30:20,415 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:30:20,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:30:20,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-28 07:30:20,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279917947] [2020-11-28 07:30:20,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:30:20,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:20,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:30:20,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:30:20,418 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 5 states. [2020-11-28 07:30:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:20,647 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-11-28 07:30:20,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:30:20,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 07:30:20,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:20,653 INFO L225 Difference]: With dead ends: 121 [2020-11-28 07:30:20,653 INFO L226 Difference]: Without dead ends: 117 [2020-11-28 07:30:20,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-11-28 07:30:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-28 07:30:20,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 66. [2020-11-28 07:30:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 07:30:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2020-11-28 07:30:20,662 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 11 [2020-11-28 07:30:20,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:20,663 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2020-11-28 07:30:20,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:30:20,663 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2020-11-28 07:30:20,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:30:20,663 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:20,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:20,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:20,877 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:20,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1068426020, now seen corresponding path program 1 times [2020-11-28 07:30:20,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:20,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865728687] [2020-11-28 07:30:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:20,889 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:30:20,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716298875] [2020-11-28 07:30:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/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 07:30:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:20,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 07:30:20,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:21,005 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 07:30:21,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:21,029 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 07:30:21,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865728687] [2020-11-28 07:30:21,030 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:30:21,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716298875] [2020-11-28 07:30:21,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:21,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:30:21,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98903415] [2020-11-28 07:30:21,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:30:21,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:21,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:30:21,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:21,032 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 6 states. [2020-11-28 07:30:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:21,197 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2020-11-28 07:30:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:30:21,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 07:30:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:21,203 INFO L225 Difference]: With dead ends: 115 [2020-11-28 07:30:21,204 INFO L226 Difference]: Without dead ends: 113 [2020-11-28 07:30:21,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:30:21,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-28 07:30:21,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 95. [2020-11-28 07:30:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-28 07:30:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 122 transitions. [2020-11-28 07:30:21,219 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 122 transitions. Word has length 12 [2020-11-28 07:30:21,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:21,219 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 122 transitions. [2020-11-28 07:30:21,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:30:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 122 transitions. [2020-11-28 07:30:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:30:21,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:21,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:21,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2020-11-28 07:30:21,440 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:21,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:21,441 INFO L82 PathProgramCache]: Analyzing trace with hash 57563731, now seen corresponding path program 1 times [2020-11-28 07:30:21,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:21,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439805556] [2020-11-28 07:30:21,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:21,451 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:30:21,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138382994] [2020-11-28 07:30:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/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 07:30:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:21,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-28 07:30:21,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:21,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:21,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439805556] [2020-11-28 07:30:21,603 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:30:21,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138382994] [2020-11-28 07:30:21,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1477766079] [2020-11-28 07:30:21,606 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-28 07:30:21,606 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:30:21,607 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:30:21,607 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:30:21,607 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:30:21,656 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:30:22,115 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 8 iterations. Over-approximation may be very coarse. [2020-11-28 07:30:22,136 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 8 iterations. Over-approximation may be very coarse. [2020-11-28 07:30:22,162 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:30:22,428 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-11-28 07:30:22,964 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-11-28 07:30:22,968 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:30:22,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:30:22,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2020-11-28 07:30:22,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352082339] [2020-11-28 07:30:22,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:30:22,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:22,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:30:22,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-11-28 07:30:22,971 INFO L87 Difference]: Start difference. First operand 95 states and 122 transitions. Second operand 8 states. [2020-11-28 07:30:23,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:23,251 INFO L93 Difference]: Finished difference Result 166 states and 209 transitions. [2020-11-28 07:30:23,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:30:23,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-11-28 07:30:23,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:23,256 INFO L225 Difference]: With dead ends: 166 [2020-11-28 07:30:23,256 INFO L226 Difference]: Without dead ends: 164 [2020-11-28 07:30:23,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-11-28 07:30:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-28 07:30:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2020-11-28 07:30:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-28 07:30:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2020-11-28 07:30:23,308 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 13 [2020-11-28 07:30:23,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:23,309 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2020-11-28 07:30:23,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:30:23,309 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2020-11-28 07:30:23,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:30:23,310 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:23,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:23,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:23,527 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:23,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:23,528 INFO L82 PathProgramCache]: Analyzing trace with hash 260409895, now seen corresponding path program 1 times [2020-11-28 07:30:23,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:23,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818462315] [2020-11-28 07:30:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:23,537 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:30:23,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984408467] [2020-11-28 07:30:23,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/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 07:30:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:23,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:30:23,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:23,606 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 07:30:23,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:23,653 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 07:30:23,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818462315] [2020-11-28 07:30:23,653 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:30:23,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984408467] [2020-11-28 07:30:23,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:23,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-11-28 07:30:23,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624701304] [2020-11-28 07:30:23,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:30:23,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:23,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:30:23,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:30:23,655 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand 5 states. [2020-11-28 07:30:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:26,054 INFO L93 Difference]: Finished difference Result 414 states and 544 transitions. [2020-11-28 07:30:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:30:26,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 07:30:26,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:26,057 INFO L225 Difference]: With dead ends: 414 [2020-11-28 07:30:26,057 INFO L226 Difference]: Without dead ends: 412 [2020-11-28 07:30:26,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:30:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-11-28 07:30:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 317. [2020-11-28 07:30:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-11-28 07:30:26,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 407 transitions. [2020-11-28 07:30:26,098 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 407 transitions. Word has length 14 [2020-11-28 07:30:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:26,098 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 407 transitions. [2020-11-28 07:30:26,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:30:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 407 transitions. [2020-11-28 07:30:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:30:26,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:26,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:26,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-11-28 07:30:26,324 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:26,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:26,325 INFO L82 PathProgramCache]: Analyzing trace with hash -515641706, now seen corresponding path program 1 times [2020-11-28 07:30:26,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:26,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036884786] [2020-11-28 07:30:26,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:26,333 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:30:26,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958667583] [2020-11-28 07:30:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/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 07:30:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:26,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-28 07:30:26,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:26,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:30:26,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036884786] [2020-11-28 07:30:26,499 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:30:26,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958667583] [2020-11-28 07:30:26,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:30:26,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2020-11-28 07:30:26,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535357636] [2020-11-28 07:30:26,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:26,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:26,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:26,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:26,501 INFO L87 Difference]: Start difference. First operand 317 states and 407 transitions. Second operand 3 states. [2020-11-28 07:30:26,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:26,505 INFO L93 Difference]: Finished difference Result 317 states and 407 transitions. [2020-11-28 07:30:26,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:30:26,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-28 07:30:26,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:26,505 INFO L225 Difference]: With dead ends: 317 [2020-11-28 07:30:26,505 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:30:26,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:26,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:30:26,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:30:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:30:26,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:30:26,508 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-28 07:30:26,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:26,508 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:30:26,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:30:26,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:30:26,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-11-28 07:30:26,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:30:26,755 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:30:26,755 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:30:26,755 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: false [2020-11-28 07:30:26,755 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:30:26,755 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: false [2020-11-28 07:30:26,756 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:30:26,756 INFO L270 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-11-28 07:30:26,756 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:30:26,756 INFO L270 CegarLoopResult]: At program point L11-7(lines 53 54) the Hoare annotation is: false [2020-11-28 07:30:26,756 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-28 07:30:26,756 INFO L277 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: true [2020-11-28 07:30:26,756 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:30:26,756 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:30:26,756 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:30:26,756 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:30:26,756 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:30:26,756 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:30:26,757 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-28 07:30:26,757 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:30:26,757 INFO L270 CegarLoopResult]: At program point L47-2(lines 47 57) the Hoare annotation is: false [2020-11-28 07:30:26,757 INFO L274 CegarLoopResult]: For program point L47-3(lines 47 57) no Hoare annotation was computed. [2020-11-28 07:30:26,757 INFO L270 CegarLoopResult]: At program point L40-2(lines 40 60) the Hoare annotation is: false [2020-11-28 07:30:26,757 INFO L274 CegarLoopResult]: For program point L40-3(lines 40 60) no Hoare annotation was computed. [2020-11-28 07:30:26,757 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:30:26,757 INFO L274 CegarLoopResult]: For program point L41(lines 41 42) no Hoare annotation was computed. [2020-11-28 07:30:26,757 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:30:26,757 INFO L270 CegarLoopResult]: At program point L33-2(lines 33 71) the Hoare annotation is: false [2020-11-28 07:30:26,757 INFO L274 CegarLoopResult]: For program point L33-3(lines 33 71) no Hoare annotation was computed. [2020-11-28 07:30:26,757 INFO L274 CegarLoopResult]: For program point L34(lines 34 35) no Hoare annotation was computed. [2020-11-28 07:30:26,757 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:30:26,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:30:26 BoogieIcfgContainer [2020-11-28 07:30:26,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:30:26,769 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:30:26,770 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:30:26,770 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:30:26,770 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:14" (3/4) ... [2020-11-28 07:30:26,784 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:30:26,794 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:30:26,795 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:30:26,795 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:30:26,795 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:30:26,868 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_81e21acf-083c-4d9c-879a-feab3af085d2/bin/utaipan/witness.graphml [2020-11-28 07:30:26,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:30:26,870 INFO L168 Benchmark]: Toolchain (without parser) took 13083.06 ms. Allocated memory was 127.9 MB in the beginning and 209.7 MB in the end (delta: 81.8 MB). Free memory was 95.8 MB in the beginning and 157.4 MB in the end (delta: -61.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:26,870 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 51.8 MB in the beginning and 51.8 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:26,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.11 ms. Allocated memory is still 127.9 MB. Free memory was 95.8 MB in the beginning and 105.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:26,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.73 ms. Allocated memory is still 127.9 MB. Free memory was 105.4 MB in the beginning and 103.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:26,871 INFO L168 Benchmark]: Boogie Preprocessor took 53.36 ms. Allocated memory is still 127.9 MB. Free memory was 103.3 MB in the beginning and 101.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:26,872 INFO L168 Benchmark]: RCFGBuilder took 625.64 ms. Allocated memory is still 127.9 MB. Free memory was 101.9 MB in the beginning and 78.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:26,872 INFO L168 Benchmark]: TraceAbstraction took 11940.09 ms. Allocated memory was 127.9 MB in the beginning and 209.7 MB in the end (delta: 81.8 MB). Free memory was 78.1 MB in the beginning and 161.6 MB in the end (delta: -83.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:26,873 INFO L168 Benchmark]: Witness Printer took 99.34 ms. Allocated memory is still 209.7 MB. Free memory was 161.6 MB in the beginning and 157.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:26,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 51.8 MB in the beginning and 51.8 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.11 ms. Allocated memory is still 127.9 MB. Free memory was 95.8 MB in the beginning and 105.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.73 ms. Allocated memory is still 127.9 MB. Free memory was 105.4 MB in the beginning and 103.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.36 ms. Allocated memory is still 127.9 MB. Free memory was 103.3 MB in the beginning and 101.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 625.64 ms. Allocated memory is still 127.9 MB. Free memory was 101.9 MB in the beginning and 78.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11940.09 ms. Allocated memory was 127.9 MB in the beginning and 209.7 MB in the end (delta: 81.8 MB). Free memory was 78.1 MB in the beginning and 161.6 MB in the end (delta: -83.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 99.34 ms. Allocated memory is still 209.7 MB. Free memory was 161.6 MB in the beginning and 157.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.8s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 199 SDtfs, 397 SDslu, 351 SDs, 0 SdLazy, 316 SolverSat, 32 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 202 GetRequests, 141 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=317occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 214 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 10609 SizeOfPredicates, 61 NumberOfNonLiveVariables, 659 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 17 InterpolantComputations, 12 PerfectInterpolantSequences, 4/20 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 correct! Received shutdown request...