./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.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_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/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 6eb545a456a66b29ef54dda1fc01800b021f2fd2 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:56:47,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:47,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:47,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:47,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:47,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:47,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:47,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:47,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:47,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:47,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:47,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:47,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:47,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:47,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:47,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:47,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:47,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:47,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:47,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:47,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:47,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:47,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:47,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:47,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:47,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:47,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:47,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:47,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:47,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:47,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:47,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:47,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:47,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:47,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:47,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:47,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:47,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:47,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:47,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:47,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:47,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:56:47,347 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:47,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:47,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:47,349 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:47,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:47,350 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:47,350 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:47,350 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:47,351 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:47,351 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:47,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:47,352 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:47,353 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:47,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:47,353 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:47,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:47,354 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:47,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:47,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:47,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:47,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:47,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:47,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:47,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:47,356 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:47,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:47,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:47,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:47,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:47,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:47,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:47,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:47,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:47,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:47,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:47,361 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:47,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:47,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:47,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:47,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:47,362 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_ef06675e-293d-4812-a70b-e2a998fe286d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eb545a456a66b29ef54dda1fc01800b021f2fd2 [2020-11-22 12:56:47,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:47,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:47,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:47,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:47,727 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:47,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2020-11-22 12:56:47,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan/data/4278071bc/4ac8a77ae1784a1db9cecbb9a7b29f8a/FLAG4354ff683 [2020-11-22 12:56:48,447 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:48,447 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2020-11-22 12:56:48,455 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan/data/4278071bc/4ac8a77ae1784a1db9cecbb9a7b29f8a/FLAG4354ff683 [2020-11-22 12:56:48,778 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan/data/4278071bc/4ac8a77ae1784a1db9cecbb9a7b29f8a [2020-11-22 12:56:48,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:48,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:48,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:48,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:48,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:48,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:48" (1/1) ... [2020-11-22 12:56:48,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d05a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:48, skipping insertion in model container [2020-11-22 12:56:48,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:48" (1/1) ... [2020-11-22 12:56:48,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:48,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:49,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:49,179 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:49,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:49,245 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:49,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49 WrapperNode [2020-11-22 12:56:49,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:49,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:49,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:49,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:49,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49" (1/1) ... [2020-11-22 12:56:49,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49" (1/1) ... [2020-11-22 12:56:49,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:49,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:49,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:49,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:49,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49" (1/1) ... [2020-11-22 12:56:49,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49" (1/1) ... [2020-11-22 12:56:49,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49" (1/1) ... [2020-11-22 12:56:49,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49" (1/1) ... [2020-11-22 12:56:49,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49" (1/1) ... [2020-11-22 12:56:49,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49" (1/1) ... [2020-11-22 12:56:49,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49" (1/1) ... [2020-11-22 12:56:49,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:49,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:49,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:49,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:49,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/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 [2020-11-22 12:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:49,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:50,182 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:50,183 INFO L298 CfgBuilder]: Removed 41 assume(true) statements. [2020-11-22 12:56:50,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:50 BoogieIcfgContainer [2020-11-22 12:56:50,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:50,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:50,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:50,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:50,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:48" (1/3) ... [2020-11-22 12:56:50,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db89550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:50, skipping insertion in model container [2020-11-22 12:56:50,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:49" (2/3) ... [2020-11-22 12:56:50,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db89550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:50, skipping insertion in model container [2020-11-22 12:56:50,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:50" (3/3) ... [2020-11-22 12:56:50,224 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2020-11-22 12:56:50,243 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:50,248 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-22 12:56:50,263 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-22 12:56:50,292 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:50,292 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:50,292 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:50,292 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:50,293 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:50,293 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:50,293 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:50,293 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-22 12:56:50,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 12:56:50,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:50,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 12:56:50,318 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:50,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:50,324 INFO L82 PathProgramCache]: Analyzing trace with hash 5669324, now seen corresponding path program 1 times [2020-11-22 12:56:50,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:50,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367153187] [2020-11-22 12:56:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:50,434 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:56:50,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669619421] [2020-11-22 12:56:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/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 [2020-11-22 12:56:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:50,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 12:56:50,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:50,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:50,645 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:56:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:50,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367153187] [2020-11-22 12:56:50,882 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:56:50,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669619421] [2020-11-22 12:56:50,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:50,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:56:50,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558874121] [2020-11-22 12:56:50,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:56:50,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:50,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:56:50,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:50,914 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2020-11-22 12:56:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:53,453 INFO L93 Difference]: Finished difference Result 117 states and 149 transitions. [2020-11-22 12:56:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:53,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-22 12:56:53,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:53,470 INFO L225 Difference]: With dead ends: 117 [2020-11-22 12:56:53,471 INFO L226 Difference]: Without dead ends: 80 [2020-11-22 12:56:53,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:56:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-22 12:56:53,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 50. [2020-11-22 12:56:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-22 12:56:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-11-22 12:56:53,547 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 4 [2020-11-22 12:56:53,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:53,548 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-11-22 12:56:53,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:56:53,548 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-11-22 12:56:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:56:53,549 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:53,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:56:53,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 12:56:53,763 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:53,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:53,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1153440271, now seen corresponding path program 1 times [2020-11-22 12:56:53,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:53,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641227530] [2020-11-22 12:56:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:53,783 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:56:53,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139650518] [2020-11-22 12:56:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/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 [2020-11-22 12:56:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:53,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-22 12:56:53,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:54,059 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2020-11-22 12:56:54,065 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 7, 1] term [2020-11-22 12:56:54,066 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:56:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:54,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:54,109 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:56:54,178 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-22 12:56:54,178 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:56:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:54,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641227530] [2020-11-22 12:56:54,592 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:56:54,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139650518] [2020-11-22 12:56:54,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:54,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2020-11-22 12:56:54,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614114984] [2020-11-22 12:56:54,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 12:56:54,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:54,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 12:56:54,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:56:54,597 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 8 states. [2020-11-22 12:56:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:55,000 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-11-22 12:56:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:56:55,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2020-11-22 12:56:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:55,003 INFO L225 Difference]: With dead ends: 68 [2020-11-22 12:56:55,003 INFO L226 Difference]: Without dead ends: 66 [2020-11-22 12:56:55,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:56:55,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-22 12:56:55,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 50. [2020-11-22 12:56:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-22 12:56:55,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-11-22 12:56:55,032 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 6 [2020-11-22 12:56:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:55,036 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-11-22 12:56:55,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 12:56:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-11-22 12:56:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:56:55,037 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:55,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:55,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:55,239 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:55,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:55,239 INFO L82 PathProgramCache]: Analyzing trace with hash 354725650, now seen corresponding path program 1 times [2020-11-22 12:56:55,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:55,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129264706] [2020-11-22 12:56:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:55,261 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:56:55,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355028536] [2020-11-22 12:56:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/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 [2020-11-22 12:56:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:55,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-22 12:56:55,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:55,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:55,424 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:56:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:55,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129264706] [2020-11-22 12:56:55,442 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:56:55,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355028536] [2020-11-22 12:56:55,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:55,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:56:55,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623027516] [2020-11-22 12:56:55,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:56:55,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:55,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:56:55,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:55,445 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 5 states. [2020-11-22 12:56:55,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:55,650 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-11-22 12:56:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:56:55,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-22 12:56:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:55,655 INFO L225 Difference]: With dead ends: 66 [2020-11-22 12:56:55,655 INFO L226 Difference]: Without dead ends: 58 [2020-11-22 12:56:55,656 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 [2020-11-22 12:56:55,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-22 12:56:55,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-11-22 12:56:55,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-22 12:56:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-11-22 12:56:55,673 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 8 [2020-11-22 12:56:55,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:55,674 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-11-22 12:56:55,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:56:55,675 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-11-22 12:56:55,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:56:55,676 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:55,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:55,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:55,893 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:55,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:55,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2018188710, now seen corresponding path program 1 times [2020-11-22 12:56:55,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:55,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074937365] [2020-11-22 12:56:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:55,916 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:56:55,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218946327] [2020-11-22 12:56:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/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 [2020-11-22 12:56:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:55,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:56:55,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:56,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:56,013 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:56:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:56,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074937365] [2020-11-22 12:56:56,023 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:56:56,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218946327] [2020-11-22 12:56:56,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:56,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 12:56:56,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305963143] [2020-11-22 12:56:56,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:56,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:56,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:56,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:56,026 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 4 states. [2020-11-22 12:56:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:56,123 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-11-22 12:56:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:56,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 12:56:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:56,125 INFO L225 Difference]: With dead ends: 54 [2020-11-22 12:56:56,125 INFO L226 Difference]: Without dead ends: 52 [2020-11-22 12:56:56,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:56,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-22 12:56:56,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-22 12:56:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-22 12:56:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-11-22 12:56:56,143 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 11 [2020-11-22 12:56:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:56,143 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-22 12:56:56,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-11-22 12:56:56,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:56:56,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:56,146 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:56,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:56,369 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:56,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:56,369 INFO L82 PathProgramCache]: Analyzing trace with hash 53388339, now seen corresponding path program 1 times [2020-11-22 12:56:56,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:56,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284284054] [2020-11-22 12:56:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:56,383 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:56:56,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256912294] [2020-11-22 12:56:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/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 [2020-11-22 12:56:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:56,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-22 12:56:56,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:56,710 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-22 12:56:56,711 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:56:56,714 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 12:56:56,716 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 12:56:56,718 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 12:56:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:56,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:56,801 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:56:56,881 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 7, 1] term [2020-11-22 12:56:56,882 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:56:57,126 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-22 12:56:57,389 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-22 12:56:57,393 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-22 12:56:57,399 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:56:57,557 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2020-11-22 12:56:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:57,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284284054] [2020-11-22 12:56:57,575 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:56:57,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256912294] [2020-11-22 12:56:57,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [419505969] [2020-11-22 12:56:57,600 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-22 12:56:57,601 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:56:57,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:56:57,616 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:56:57,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:56:57,714 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 12:56:58,598 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:56:58,840 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-11-22 12:56:59,041 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-22 12:56:59,562 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-22 12:57:00,052 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-11-22 12:57:00,378 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-11-22 12:57:00,650 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-11-22 12:57:01,074 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-11-22 12:57:01,405 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-11-22 12:57:01,421 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:57:01,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:57:01,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2020-11-22 12:57:01,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905117943] [2020-11-22 12:57:01,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 12:57:01,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:01,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 12:57:01,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-11-22 12:57:01,424 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 10 states. [2020-11-22 12:57:01,747 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-11-22 12:57:01,983 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-11-22 12:57:02,546 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2020-11-22 12:57:03,004 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-11-22 12:57:03,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:03,142 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-11-22 12:57:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 12:57:03,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-22 12:57:03,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:03,145 INFO L225 Difference]: With dead ends: 62 [2020-11-22 12:57:03,145 INFO L226 Difference]: Without dead ends: 60 [2020-11-22 12:57:03,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2020-11-22 12:57:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-22 12:57:03,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-11-22 12:57:03,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-22 12:57:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-11-22 12:57:03,171 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 13 [2020-11-22 12:57:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:03,171 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-11-22 12:57:03,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 12:57:03,171 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-11-22 12:57:03,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:57:03,172 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:03,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:03,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:03,377 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:03,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:03,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1845678679, now seen corresponding path program 1 times [2020-11-22 12:57:03,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:03,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828309162] [2020-11-22 12:57:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:03,405 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:57:03,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818255145] [2020-11-22 12:57:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/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 [2020-11-22 12:57:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:03,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 12:57:03,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:03,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:03,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828309162] [2020-11-22 12:57:03,634 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:57:03,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818255145] [2020-11-22 12:57:03,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:03,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2020-11-22 12:57:03,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430935074] [2020-11-22 12:57:03,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:57:03,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:03,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:57:03,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:57:03,636 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-11-22 12:57:04,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:04,137 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-11-22 12:57:04,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:57:04,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-22 12:57:04,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:04,139 INFO L225 Difference]: With dead ends: 50 [2020-11-22 12:57:04,139 INFO L226 Difference]: Without dead ends: 44 [2020-11-22 12:57:04,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:57:04,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-22 12:57:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-22 12:57:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-22 12:57:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-11-22 12:57:04,149 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 13 [2020-11-22 12:57:04,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:04,150 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-11-22 12:57:04,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:57:04,150 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-11-22 12:57:04,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 12:57:04,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:04,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-22 12:57:04,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:04,365 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:04,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:04,366 INFO L82 PathProgramCache]: Analyzing trace with hash -233226186, now seen corresponding path program 1 times [2020-11-22 12:57:04,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:04,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978447269] [2020-11-22 12:57:04,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:04,377 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:57:04,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445726894] [2020-11-22 12:57:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/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 [2020-11-22 12:57:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:04,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-22 12:57:04,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:04,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:04,995 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-22 12:57:05,395 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2020-11-22 12:57:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:05,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978447269] [2020-11-22 12:57:05,400 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:57:05,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445726894] [2020-11-22 12:57:05,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2059118049] [2020-11-22 12:57:05,406 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-22 12:57:05,406 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:57:05,406 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:57:05,407 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:57:05,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:57:05,513 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 12:57:06,064 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:57:06,430 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-11-22 12:57:06,598 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-22 12:57:07,059 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-22 12:57:07,506 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-11-22 12:57:07,787 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-11-22 12:57:08,152 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-11-22 12:57:08,514 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-11-22 12:57:08,904 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-11-22 12:57:08,905 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:57:08,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:57:08,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2020-11-22 12:57:08,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534444412] [2020-11-22 12:57:08,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 12:57:08,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:08,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 12:57:08,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-11-22 12:57:08,907 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 10 states. [2020-11-22 12:57:09,283 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-11-22 12:57:09,670 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-11-22 12:57:10,683 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-11-22 12:57:10,840 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2020-11-22 12:57:11,174 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-11-22 12:57:11,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:11,344 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-11-22 12:57:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-22 12:57:11,345 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-11-22 12:57:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:11,346 INFO L225 Difference]: With dead ends: 46 [2020-11-22 12:57:11,346 INFO L226 Difference]: Without dead ends: 32 [2020-11-22 12:57:11,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2020-11-22 12:57:11,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-22 12:57:11,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-22 12:57:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-22 12:57:11,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-11-22 12:57:11,355 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 15 [2020-11-22 12:57:11,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:11,355 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-11-22 12:57:11,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 12:57:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-11-22 12:57:11,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:57:11,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:11,356 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-11-22 12:57:11,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:11,556 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:11,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:11,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1223651660, now seen corresponding path program 1 times [2020-11-22 12:57:11,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:11,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629788992] [2020-11-22 12:57:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:11,565 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:57:11,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941853511] [2020-11-22 12:57:11,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/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 [2020-11-22 12:57:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:11,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-22 12:57:11,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:11,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:11,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629788992] [2020-11-22 12:57:11,757 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:57:11,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941853511] [2020-11-22 12:57:11,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:11,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-22 12:57:11,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059892563] [2020-11-22 12:57:11,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:11,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:11,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:11,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:11,759 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 6 states. [2020-11-22 12:57:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:11,825 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-11-22 12:57:11,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:11,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-22 12:57:11,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:11,833 INFO L225 Difference]: With dead ends: 32 [2020-11-22 12:57:11,833 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:57:11,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:11,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:57:11,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:57:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:57:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:57:11,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-22 12:57:11,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:11,840 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:57:11,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:11,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:57:11,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:57:12,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:12,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:57:12,556 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-11-22 12:57:13,066 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 27 [2020-11-22 12:57:13,444 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-11-22 12:57:16,253 WARN L193 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-11-22 12:57:16,611 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-11-22 12:57:16,940 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-11-22 12:57:17,115 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39 [2020-11-22 12:57:17,117 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2020-11-22 12:57:17,117 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:17,117 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:57:17,117 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: (let ((.cse5 (= ULTIMATE.start_main_~r~0 0)) (.cse4 (= ULTIMATE.start_main_~p~0 1)) (.cse0 (= ULTIMATE.start_main_~s~0 1)) (.cse6 (<= 1 ULTIMATE.start_main_~x~0)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (let ((.cse2 (< ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0))) (and (or (and .cse0 .cse1 .cse2 .cse3) (and (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) .cse0 (= (+ ULTIMATE.start_main_~q~0 1) 0) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) (not (= ULTIMATE.start_main_~b~0 0)) (<= 1 ULTIMATE.start_main_~y~0) (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (or (and (= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse4 .cse2 (= (+ ULTIMATE.start_main_~r~0 1) 0)) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse5 .cse4)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse6)) (and (<= ULTIMATE.start_main_~a~0 2) .cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse4 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) .cse0 .cse6 .cse1 .cse3 (<= 1 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2)))) [2020-11-22 12:57:17,117 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:57:17,118 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~r~0 0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~s~0 1)) (.cse6 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (not (= ULTIMATE.start_main_~b~0 0)) (<= 1 ULTIMATE.start_main_~y~0) (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (or (and (= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse0 (< ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (= (+ ULTIMATE.start_main_~r~0 1) 0)) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse1 .cse0)) .cse2 (or (and .cse3 .cse4 .cse5) (and (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) .cse3 (= (+ ULTIMATE.start_main_~q~0 1) 0) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) .cse6) (and (<= ULTIMATE.start_main_~a~0 2) .cse1 .cse2 .cse0 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) .cse3 .cse6 .cse4 .cse5 (<= 1 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2)))) [2020-11-22 12:57:17,118 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:57:17,118 INFO L270 CegarLoopResult]: At program point L11-5(lines 40 41) the Hoare annotation is: (let ((.cse5 (= ULTIMATE.start_main_~r~0 0)) (.cse4 (= ULTIMATE.start_main_~p~0 1)) (.cse0 (= ULTIMATE.start_main_~s~0 1)) (.cse6 (<= 1 ULTIMATE.start_main_~x~0)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (let ((.cse2 (< ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0))) (and (or (and .cse0 .cse1 .cse2 .cse3) (and (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) .cse0 (= (+ ULTIMATE.start_main_~q~0 1) 0) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) (not (= ULTIMATE.start_main_~b~0 0)) (<= 1 ULTIMATE.start_main_~y~0) (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (or (and (= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse4 .cse2 (= (+ ULTIMATE.start_main_~r~0 1) 0)) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse5 .cse4)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse6)) (and (<= ULTIMATE.start_main_~a~0 2) .cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse4 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) .cse0 .cse6 .cse1 .cse3 (<= 1 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2)))) [2020-11-22 12:57:17,118 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:57:17,118 INFO L270 CegarLoopResult]: At program point L11-7(lines 10 16) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (let ((.cse0 (= ULTIMATE.start_main_~p~0 1))) (or (and (= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse0 (< ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (= (+ ULTIMATE.start_main_~r~0 1) 0)) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~r~0 0) .cse0))) (<= ULTIMATE.start_main_~x~0 2) (let ((.cse1 (= ULTIMATE.start_main_~s~0 1))) (or (and .cse1 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse1 (= (+ ULTIMATE.start_main_~q~0 1) 0) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (<= ULTIMATE.start_main_~y~0 2)) [2020-11-22 12:57:17,118 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:57:17,118 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)))) (.cse1 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0))) (.cse2 (= ULTIMATE.start_main_~s~0 1)) (.cse3 (<= 1 ULTIMATE.start_main_~x~0))) (or (and (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 .cse2 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (<= ULTIMATE.start_main_~y~0 2)) (and (<= 1 ULTIMATE.start_main_~y~0) .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2020-11-22 12:57:17,118 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:57:17,118 INFO L270 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))))) (or (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~s~0 1) .cse0 (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0))) .cse0 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)))) [2020-11-22 12:57:17,118 INFO L274 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L277 CegarLoopResult]: At program point L11-13(lines 10 16) the Hoare annotation is: true [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:57:17,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:57:17,120 INFO L270 CegarLoopResult]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~r~0 0)) (.cse0 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= ULTIMATE.start_main_~s~0 1)) (.cse5 (<= 1 ULTIMATE.start_main_~x~0)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (not (= ULTIMATE.start_main_~b~0 0)) (<= 1 ULTIMATE.start_main_~y~0) (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (or (and (= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse0 (< ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (= (+ ULTIMATE.start_main_~r~0 1) 0)) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse1 .cse0)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (and .cse2 .cse3 .cse4) (and (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) .cse2 (= (+ ULTIMATE.start_main_~q~0 1) 0) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) .cse5) (and (<= ULTIMATE.start_main_~a~0 2) .cse1 .cse0 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) .cse2 .cse5 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2)))) [2020-11-22 12:57:17,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:17 BoogieIcfgContainer [2020-11-22 12:57:17,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:17,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:17,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:17,148 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:17,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:50" (3/4) ... [2020-11-22 12:57:17,151 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:57:17,161 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2020-11-22 12:57:17,161 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 12:57:17,162 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 12:57:17,162 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:57:17,215 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ef06675e-293d-4812-a70b-e2a998fe286d/bin/utaipan/witness.graphml [2020-11-22 12:57:17,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:17,216 INFO L168 Benchmark]: Toolchain (without parser) took 28434.07 ms. Allocated memory was 81.8 MB in the beginning and 144.7 MB in the end (delta: 62.9 MB). Free memory was 49.3 MB in the beginning and 78.8 MB in the end (delta: -29.5 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:17,216 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 57.2 MB in the beginning and 57.2 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:17,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.97 ms. Allocated memory is still 81.8 MB. Free memory was 49.0 MB in the beginning and 59.5 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:17,217 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.99 ms. Allocated memory is still 81.8 MB. Free memory was 59.5 MB in the beginning and 57.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:17,218 INFO L168 Benchmark]: Boogie Preprocessor took 45.76 ms. Allocated memory is still 81.8 MB. Free memory was 57.9 MB in the beginning and 56.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:17,218 INFO L168 Benchmark]: RCFGBuilder took 810.50 ms. Allocated memory is still 81.8 MB. Free memory was 56.6 MB in the beginning and 61.0 MB in the end (delta: -4.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:17,218 INFO L168 Benchmark]: TraceAbstraction took 26948.35 ms. Allocated memory was 81.8 MB in the beginning and 144.7 MB in the end (delta: 62.9 MB). Free memory was 60.5 MB in the beginning and 82.9 MB in the end (delta: -22.4 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:17,219 INFO L168 Benchmark]: Witness Printer took 67.16 ms. Allocated memory is still 144.7 MB. Free memory was 82.9 MB in the beginning and 78.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:17,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 57.2 MB in the beginning and 57.2 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 464.97 ms. Allocated memory is still 81.8 MB. Free memory was 49.0 MB in the beginning and 59.5 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.99 ms. Allocated memory is still 81.8 MB. Free memory was 59.5 MB in the beginning and 57.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.76 ms. Allocated memory is still 81.8 MB. Free memory was 57.9 MB in the beginning and 56.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 810.50 ms. Allocated memory is still 81.8 MB. Free memory was 56.6 MB in the beginning and 61.0 MB in the end (delta: -4.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26948.35 ms. Allocated memory was 81.8 MB in the beginning and 144.7 MB in the end (delta: 62.9 MB). Free memory was 60.5 MB in the beginning and 82.9 MB in the end (delta: -22.4 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. * Witness Printer took 67.16 ms. Allocated memory is still 144.7 MB. Free memory was 82.9 MB in the beginning and 78.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 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 - 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 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((s == 1 && q == 0) && y < x) && b == y) || (((x <= y && s == 1) && q + 1 == 0) && y == b + x)) && !(b == 0)) && 1 <= y) && a + b <= 2) && ((((a + y == x && p == 1) && y < x) && r + 1 == 0) || ((a == x && r == 0) && p == 1))) && 1 <= cond) && 1 <= x) || ((((((((((a <= 2 && r == 0) && 1 == cond) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && b == y) && 1 <= b) && y <= 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((1 <= y && s == 1) && a == p * x + r * y) && 1 <= x) && q == 0) && b == y) || ((b == q * x + s * y && a == p * x + r * y) && b == a) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((s == 1 && q == 0) && y < x) && b == y) || (((x <= y && s == 1) && q + 1 == 0) && y == b + x)) && !(b == 0)) && 1 <= y) && a + b <= 2) && ((((a + y == x && p == 1) && y < x) && r + 1 == 0) || ((a == x && r == 0) && p == 1))) && 1 <= cond) && 1 <= x) || ((((((((((a <= 2 && r == 0) && 1 == cond) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && b == y) && 1 <= b) && y <= 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((x <= y && 1 == cond) && a == p * x + r * y) && q * r + 1 == p * s) && s == 1) && q + 1 == 0) && 1 <= x) && b == a) && y == b + x) && y <= 2) || ((((((1 <= y && a == p * x + r * y) && q * r + 1 == p * s) && s == 1) && 1 <= x) && q == 0) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((!(b == 0) && 1 <= y) && a + b <= 2) && ((((a + y == x && p == 1) && y < x) && r + 1 == 0) || ((a == x && r == 0) && p == 1))) && 1 == cond) && (((s == 1 && q == 0) && b == y) || (((x <= y && s == 1) && q + 1 == 0) && y == b + x))) && 1 <= x) || ((((((((((a <= 2 && r == 0) && 1 == cond) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && b == y) && 1 <= b) && y <= 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((!(b == 0) && 1 <= y) && a + b <= 2) && ((((a + y == x && p == 1) && y < x) && r + 1 == 0) || ((a == x && r == 0) && p == 1))) && 1 <= cond) && (((s == 1 && q == 0) && b == y) || (((x <= y && s == 1) && q + 1 == 0) && y == b + x))) && 1 <= x) || (((((((((a <= 2 && r == 0) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && b == y) && 1 <= b) && y <= 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((1 <= y && ((((a + y == x && p == 1) && y < x) && r + 1 == 0) || ((a == x && r == 0) && p == 1))) && x <= 2) && (((s == 1 && q == 0) && b == y) || ((s == 1 && q + 1 == 0) && y == b + x))) && 1 == cond) && b == a) && y <= 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.7s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 392 SDslu, 225 SDs, 0 SdLazy, 391 SolverSat, 104 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 124 SyntacticMatches, 9 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=3, 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, 8 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 26 NumberOfFragments, 667 HoareAnnotationTreeSize, 8 FomulaSimplifications, 286 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1176 FormulaSimplificationTreeSizeReductionInter, 4.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 160 ConstructedInterpolants, 1 QuantifiedInterpolants, 28254 SizeOfPredicates, 88 NumberOfNonLiveVariables, 633 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 22/42 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...