./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/lcm2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/lcm2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d162b857a109cf07f49ff5c5c478da80317c448 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:52:10,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:52:10,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:52:10,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:52:10,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:52:10,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:52:10,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:52:10,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:52:10,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:52:10,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:52:10,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:52:10,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:52:10,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:52:10,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:52:10,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:52:10,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:52:10,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:52:10,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:52:10,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:52:10,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:52:10,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:52:10,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:52:10,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:52:10,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:52:10,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:52:10,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:52:10,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:52:10,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:52:10,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:52:10,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:52:10,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:52:10,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:52:10,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:52:10,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:52:10,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:52:10,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:52:10,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:52:10,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:52:10,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:52:10,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:52:10,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:52:10,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 20:52:10,410 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:52:10,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:52:10,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:52:10,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:52:10,412 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:52:10,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:52:10,412 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:52:10,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:52:10,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:52:10,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:52:10,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:52:10,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:52:10,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:52:10,413 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:52:10,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:52:10,414 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:52:10,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:52:10,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:52:10,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:52:10,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:52:10,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:52:10,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:52:10,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:52:10,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:52:10,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:52:10,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:52:10,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:52:10,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:52:10,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d162b857a109cf07f49ff5c5c478da80317c448 [2019-11-15 20:52:10,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:52:10,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:52:10,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:52:10,455 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:52:10,455 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:52:10,456 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/lcm2.c [2019-11-15 20:52:10,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/data/ac9fbc4e7/9345b98bee93432fb0c46df173b1a03d/FLAGb0ce06e3a [2019-11-15 20:52:10,894 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:52:10,895 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/sv-benchmarks/c/nla-digbench/lcm2.c [2019-11-15 20:52:10,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/data/ac9fbc4e7/9345b98bee93432fb0c46df173b1a03d/FLAGb0ce06e3a [2019-11-15 20:52:10,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/data/ac9fbc4e7/9345b98bee93432fb0c46df173b1a03d [2019-11-15 20:52:10,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:52:10,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:52:10,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:52:10,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:52:10,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:52:10,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:52:10" (1/1) ... [2019-11-15 20:52:10,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f59373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:10, skipping insertion in model container [2019-11-15 20:52:10,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:52:10" (1/1) ... [2019-11-15 20:52:10,931 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:52:10,946 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:52:11,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:52:11,135 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:52:11,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:52:11,164 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:52:11,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11 WrapperNode [2019-11-15 20:52:11,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:52:11,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:52:11,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:52:11,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:52:11,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11" (1/1) ... [2019-11-15 20:52:11,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11" (1/1) ... [2019-11-15 20:52:11,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:52:11,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:52:11,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:52:11,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:52:11,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11" (1/1) ... [2019-11-15 20:52:11,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11" (1/1) ... [2019-11-15 20:52:11,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11" (1/1) ... [2019-11-15 20:52:11,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11" (1/1) ... [2019-11-15 20:52:11,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11" (1/1) ... [2019-11-15 20:52:11,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11" (1/1) ... [2019-11-15 20:52:11,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11" (1/1) ... [2019-11-15 20:52:11,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:52:11,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:52:11,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:52:11,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:52:11,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:52:11,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:52:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:52:11,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2019-11-15 20:52:11,498 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:52:11,499 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-15 20:52:11,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:52:11 BoogieIcfgContainer [2019-11-15 20:52:11,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:52:11,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:52:11,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:52:11,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:52:11,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:52:10" (1/3) ... [2019-11-15 20:52:11,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6014b269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:52:11, skipping insertion in model container [2019-11-15 20:52:11,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:52:11" (2/3) ... [2019-11-15 20:52:11,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6014b269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:52:11, skipping insertion in model container [2019-11-15 20:52:11,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:52:11" (3/3) ... [2019-11-15 20:52:11,507 INFO L109 eAbstractionObserver]: Analyzing ICFG lcm2.c [2019-11-15 20:52:11,530 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:52:11,537 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-15 20:52:11,549 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-15 20:52:11,576 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:52:11,576 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:52:11,576 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:52:11,577 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:52:11,577 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:52:11,577 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:52:11,578 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:52:11,578 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:52:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-15 20:52:11,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-15 20:52:11,599 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:52:11,600 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-15 20:52:11,602 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:52:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:52:11,609 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-15 20:52:11,617 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:52:11,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893829305] [2019-11-15 20:52:11,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:11,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:11,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:52:11,723 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:52:11,723 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429394123] [2019-11-15 20:52:11,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:52:11,792 WARN L254 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-15 20:52:11,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:52:11,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:52:11,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893829305] [2019-11-15 20:52:11,856 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 20:52:11,857 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429394123] [2019-11-15 20:52:11,857 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:52:11,857 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:52:11,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127226607] [2019-11-15 20:52:11,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:52:11,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:52:11,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:52:11,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:52:11,877 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-15 20:52:11,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:52:11,987 INFO L93 Difference]: Finished difference Result 40 states and 57 transitions. [2019-11-15 20:52:11,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:52:11,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-15 20:52:11,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:52:11,997 INFO L225 Difference]: With dead ends: 40 [2019-11-15 20:52:11,997 INFO L226 Difference]: Without dead ends: 16 [2019-11-15 20:52:12,001 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:52:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-15 20:52:12,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-11-15 20:52:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-15 20:52:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-15 20:52:12,033 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2019-11-15 20:52:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:52:12,033 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-15 20:52:12,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:52:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-15 20:52:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 20:52:12,034 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:52:12,035 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-15 20:52:12,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:12,238 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:52:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:52:12,239 INFO L82 PathProgramCache]: Analyzing trace with hash 759715009, now seen corresponding path program 1 times [2019-11-15 20:52:12,239 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:52:12,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043465315] [2019-11-15 20:52:12,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:12,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:12,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:52:12,257 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:52:12,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286913937] [2019-11-15 20:52:12,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:52:12,300 WARN L254 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-15 20:52:12,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:52:12,437 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2019-11-15 20:52:12,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:52:12,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043465315] [2019-11-15 20:52:12,567 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 20:52:12,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286913937] [2019-11-15 20:52:12,568 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:52:12,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-15 20:52:12,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012602995] [2019-11-15 20:52:12,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:52:12,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:52:12,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:52:12,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:52:12,570 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-11-15 20:52:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:52:12,743 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-11-15 20:52:12,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:52:12,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-15 20:52:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:52:12,745 INFO L225 Difference]: With dead ends: 26 [2019-11-15 20:52:12,746 INFO L226 Difference]: Without dead ends: 20 [2019-11-15 20:52:12,746 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:52:12,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-15 20:52:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-15 20:52:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 20:52:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-15 20:52:12,752 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2019-11-15 20:52:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:52:12,752 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-15 20:52:12,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:52:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-15 20:52:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 20:52:12,753 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:52:12,753 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-15 20:52:12,959 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:12,959 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:52:12,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:52:12,960 INFO L82 PathProgramCache]: Analyzing trace with hash 759774591, now seen corresponding path program 1 times [2019-11-15 20:52:12,960 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:52:12,960 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242313896] [2019-11-15 20:52:12,960 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:12,960 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:12,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:52:12,971 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:52:12,971 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067367997] [2019-11-15 20:52:12,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:52:13,000 WARN L254 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-15 20:52:13,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:52:13,175 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2019-11-15 20:52:13,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:52:13,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242313896] [2019-11-15 20:52:13,344 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 20:52:13,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067367997] [2019-11-15 20:52:13,344 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:52:13,344 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-15 20:52:13,345 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549189455] [2019-11-15 20:52:13,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:52:13,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:52:13,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:52:13,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:52:13,346 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-11-15 20:52:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:52:13,558 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-11-15 20:52:13,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:52:13,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-15 20:52:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:52:13,559 INFO L225 Difference]: With dead ends: 29 [2019-11-15 20:52:13,560 INFO L226 Difference]: Without dead ends: 23 [2019-11-15 20:52:13,560 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:52:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-15 20:52:13,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2019-11-15 20:52:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 20:52:13,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-15 20:52:13,565 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2019-11-15 20:52:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:52:13,565 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-15 20:52:13,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:52:13,565 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-15 20:52:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 20:52:13,566 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:52:13,566 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1] [2019-11-15 20:52:13,766 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:13,767 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:52:13,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:52:13,767 INFO L82 PathProgramCache]: Analyzing trace with hash -54520842, now seen corresponding path program 2 times [2019-11-15 20:52:13,767 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:52:13,767 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143854090] [2019-11-15 20:52:13,768 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:13,768 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:13,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:52:13,774 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:52:13,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135885324] [2019-11-15 20:52:13,774 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:13,815 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 20:52:13,815 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:52:13,816 WARN L254 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-15 20:52:13,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:52:13,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:52:14,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143854090] [2019-11-15 20:52:14,074 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 20:52:14,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135885324] [2019-11-15 20:52:14,074 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:52:14,074 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-15 20:52:14,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045639911] [2019-11-15 20:52:14,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:52:14,075 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:52:14,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:52:14,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:52:14,076 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 6 states. [2019-11-15 20:52:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:52:14,283 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-11-15 20:52:14,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:52:14,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-15 20:52:14,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:52:14,286 INFO L225 Difference]: With dead ends: 33 [2019-11-15 20:52:14,286 INFO L226 Difference]: Without dead ends: 27 [2019-11-15 20:52:14,286 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:52:14,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-15 20:52:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-11-15 20:52:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 20:52:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-15 20:52:14,297 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-15 20:52:14,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:52:14,297 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-15 20:52:14,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:52:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-15 20:52:14,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 20:52:14,298 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:52:14,298 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2019-11-15 20:52:14,501 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:14,501 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:52:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:52:14,502 INFO L82 PathProgramCache]: Analyzing trace with hash -54461260, now seen corresponding path program 1 times [2019-11-15 20:52:14,502 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:52:14,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790281379] [2019-11-15 20:52:14,502 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:14,503 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:14,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:52:14,511 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:52:14,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136866782] [2019-11-15 20:52:14,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:52:14,543 WARN L254 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-15 20:52:14,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:52:14,665 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2019-11-15 20:52:14,845 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-11-15 20:52:14,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:52:14,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790281379] [2019-11-15 20:52:14,974 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 20:52:14,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136866782] [2019-11-15 20:52:14,975 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:52:14,975 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-15 20:52:14,975 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395632321] [2019-11-15 20:52:14,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:52:14,976 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:52:14,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:52:14,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:52:14,976 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-15 20:52:16,954 WARN L191 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 49 [2019-11-15 20:52:17,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:52:17,134 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-11-15 20:52:17,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:52:17,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-15 20:52:17,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:52:17,135 INFO L225 Difference]: With dead ends: 33 [2019-11-15 20:52:17,136 INFO L226 Difference]: Without dead ends: 27 [2019-11-15 20:52:17,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:52:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-15 20:52:17,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-11-15 20:52:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 20:52:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-15 20:52:17,142 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-15 20:52:17,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:52:17,143 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-15 20:52:17,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:52:17,143 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-15 20:52:17,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 20:52:17,147 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:52:17,147 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2019-11-15 20:52:17,348 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:17,348 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:52:17,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:52:17,348 INFO L82 PathProgramCache]: Analyzing trace with hash -863867468, now seen corresponding path program 2 times [2019-11-15 20:52:17,349 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:52:17,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798497263] [2019-11-15 20:52:17,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:17,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:17,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:52:17,357 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:52:17,357 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387721409] [2019-11-15 20:52:17,357 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:17,400 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 20:52:17,400 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:52:17,402 WARN L254 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-15 20:52:17,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:52:17,550 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:52:17,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798497263] [2019-11-15 20:52:17,569 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 20:52:17,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387721409] [2019-11-15 20:52:17,570 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:52:17,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-15 20:52:17,570 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834383565] [2019-11-15 20:52:17,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:52:17,570 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:52:17,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:52:17,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:52:17,571 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-15 20:52:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:52:17,800 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-11-15 20:52:17,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:52:17,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-15 20:52:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:52:17,801 INFO L225 Difference]: With dead ends: 37 [2019-11-15 20:52:17,801 INFO L226 Difference]: Without dead ends: 31 [2019-11-15 20:52:17,802 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:52:17,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-15 20:52:17,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-11-15 20:52:17,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 20:52:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-15 20:52:17,809 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 12 [2019-11-15 20:52:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:52:17,809 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-15 20:52:17,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:52:17,809 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-15 20:52:17,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 20:52:17,809 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:52:17,810 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1] [2019-11-15 20:52:18,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:18,010 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:52:18,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:52:18,011 INFO L82 PathProgramCache]: Analyzing trace with hash -863807886, now seen corresponding path program 2 times [2019-11-15 20:52:18,011 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:52:18,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943072184] [2019-11-15 20:52:18,011 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:18,011 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:18,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:52:18,019 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:52:18,019 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021212381] [2019-11-15 20:52:18,020 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:18,048 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 20:52:18,048 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:52:18,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-15 20:52:18,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:52:18,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:52:18,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943072184] [2019-11-15 20:52:18,099 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 20:52:18,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021212381] [2019-11-15 20:52:18,099 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:52:18,100 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-15 20:52:18,100 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754011668] [2019-11-15 20:52:18,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:52:18,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:52:18,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:52:18,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:52:18,101 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 6 states. [2019-11-15 20:52:18,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:52:18,251 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2019-11-15 20:52:18,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:52:18,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-15 20:52:18,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:52:18,252 INFO L225 Difference]: With dead ends: 38 [2019-11-15 20:52:18,252 INFO L226 Difference]: Without dead ends: 32 [2019-11-15 20:52:18,253 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:52:18,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-15 20:52:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2019-11-15 20:52:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 20:52:18,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-15 20:52:18,259 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-15 20:52:18,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:52:18,259 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-15 20:52:18,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:52:18,264 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-15 20:52:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 20:52:18,265 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:52:18,265 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1] [2019-11-15 20:52:18,466 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:18,466 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:52:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:52:18,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1087688533, now seen corresponding path program 3 times [2019-11-15 20:52:18,466 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:52:18,466 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400011677] [2019-11-15 20:52:18,467 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:18,467 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:18,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:52:18,473 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:52:18,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876585389] [2019-11-15 20:52:18,474 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:18,501 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-15 20:52:18,501 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:52:18,502 WARN L254 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-15 20:52:18,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:52:19,760 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2019-11-15 20:52:21,784 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 24 [2019-11-15 20:52:22,562 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2019-11-15 20:52:22,563 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:22,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 20:52:22,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400011677] [2019-11-15 20:52:22,720 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 20:52:22,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876585389] [2019-11-15 20:52:22,720 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:52:22,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-15 20:52:22,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028078421] [2019-11-15 20:52:22,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 20:52:22,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:52:22,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 20:52:22,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:52:22,721 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2019-11-15 20:52:22,960 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2019-11-15 20:52:23,107 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2019-11-15 20:52:23,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:52:23,290 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-11-15 20:52:23,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:52:23,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-15 20:52:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:52:23,293 INFO L225 Difference]: With dead ends: 41 [2019-11-15 20:52:23,293 INFO L226 Difference]: Without dead ends: 35 [2019-11-15 20:52:23,294 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-11-15 20:52:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-15 20:52:23,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2019-11-15 20:52:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 20:52:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-15 20:52:23,301 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2019-11-15 20:52:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:52:23,302 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-15 20:52:23,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 20:52:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-15 20:52:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 20:52:23,303 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:52:23,303 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2019-11-15 20:52:23,503 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:23,503 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:52:23,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:52:23,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1087628951, now seen corresponding path program 3 times [2019-11-15 20:52:23,504 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:52:23,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001335053] [2019-11-15 20:52:23,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:23,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:23,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:52:23,511 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:52:23,511 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954643720] [2019-11-15 20:52:23,511 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:23,549 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-15 20:52:23,549 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:52:23,551 WARN L254 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-15 20:52:23,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:52:26,226 WARN L191 SmtUtils]: Spent 2.58 s on a formula simplification that was a NOOP. DAG size: 43 [2019-11-15 20:52:26,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-15 20:52:26,476 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-11-15 20:52:27,877 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2019-11-15 20:52:27,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 20:52:27,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001335053] [2019-11-15 20:52:27,893 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 20:52:27,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954643720] [2019-11-15 20:52:27,893 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:52:27,893 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-15 20:52:27,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696321607] [2019-11-15 20:52:27,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 20:52:27,894 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:52:27,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 20:52:27,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:52:27,894 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2019-11-15 20:52:30,536 WARN L191 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2019-11-15 20:52:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:52:32,694 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-11-15 20:52:32,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:52:32,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-15 20:52:32,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:52:32,695 INFO L225 Difference]: With dead ends: 44 [2019-11-15 20:52:32,695 INFO L226 Difference]: Without dead ends: 38 [2019-11-15 20:52:32,695 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-15 20:52:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-15 20:52:32,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2019-11-15 20:52:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 20:52:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-15 20:52:32,705 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2019-11-15 20:52:32,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:52:32,705 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-15 20:52:32,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 20:52:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-15 20:52:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 20:52:32,706 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:52:32,706 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2019-11-15 20:52:32,909 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:32,909 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:52:32,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:52:32,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1897035159, now seen corresponding path program 4 times [2019-11-15 20:52:32,910 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:52:32,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532413524] [2019-11-15 20:52:32,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:32,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:52:32,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:52:32,916 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 20:52:32,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745266034] [2019-11-15 20:52:32,916 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:32,944 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 20:52:32,944 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:52:32,944 WARN L254 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-15 20:52:32,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:52:32,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:35,074 WARN L191 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2019-11-15 20:52:35,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:35,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:52:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 4 refuted. 1 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 20:52:35,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532413524] [2019-11-15 20:52:35,138 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 20:52:35,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745266034] [2019-11-15 20:52:35,138 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:52:35,138 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-15 20:52:35,138 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706256064] [2019-11-15 20:52:35,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 20:52:35,139 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:52:35,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 20:52:35,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2019-11-15 20:52:35,139 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 7 states. [2019-11-15 20:52:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:52:35,173 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-11-15 20:52:35,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:52:35,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-11-15 20:52:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:52:35,174 INFO L225 Difference]: With dead ends: 26 [2019-11-15 20:52:35,174 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 20:52:35,174 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2019-11-15 20:52:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 20:52:35,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 20:52:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 20:52:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 20:52:35,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-15 20:52:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:52:35,177 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:52:35,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 20:52:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 20:52:35,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 20:52:35,377 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:52:35,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 20:52:35,993 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 40 [2019-11-15 20:52:35,994 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 20:52:35,994 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-11-15 20:52:35,994 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-15 20:52:35,995 INFO L439 ceAbstractionStarter]: At program point L7-2(lines 33 34) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* (* ULTIMATE.start_main_~a~0 2) ULTIMATE.start_main_~b~0))) [2019-11-15 20:52:35,995 INFO L443 ceAbstractionStarter]: For program point L36(lines 36 42) no Hoare annotation was computed. [2019-11-15 20:52:35,995 INFO L443 ceAbstractionStarter]: For program point L7-3(lines 7 10) no Hoare annotation was computed. [2019-11-15 20:52:35,995 INFO L439 ceAbstractionStarter]: At program point L36-2(lines 30 43) the Hoare annotation is: (let ((.cse0 (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* (* ULTIMATE.start_main_~a~0 2) ULTIMATE.start_main_~b~0)))) (or (and (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~u~0) (<= 1 ULTIMATE.start_main_~a~0) .cse0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (and (exists ((|v_ULTIMATE.start_main_#t~ret0_8| Int)) (let ((.cse1 (mod |v_ULTIMATE.start_main_#t~ret0_8| 4294967296))) (and (= .cse1 ULTIMATE.start_main_~a~0) (<= .cse1 2147483647)))) (exists ((|v_ULTIMATE.start_main_#t~ret1_9| Int)) (let ((.cse2 (mod |v_ULTIMATE.start_main_#t~ret1_9| 4294967296))) (and (<= .cse2 2147483647) (= ULTIMATE.start_main_~b~0 .cse2))))) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~v~0)) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) [2019-11-15 20:52:35,995 INFO L446 ceAbstractionStarter]: At program point L7-5(lines 6 12) the Hoare annotation is: true [2019-11-15 20:52:35,995 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 20:52:35,995 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 20:52:35,995 INFO L443 ceAbstractionStarter]: For program point L30-2(lines 30 43) no Hoare annotation was computed. [2019-11-15 20:52:35,995 INFO L446 ceAbstractionStarter]: At program point L49(lines 14 50) the Hoare annotation is: true [2019-11-15 20:52:35,996 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-11-15 20:52:35,996 INFO L443 ceAbstractionStarter]: For program point L8-1(lines 8 9) no Hoare annotation was computed. [2019-11-15 20:52:35,996 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-15 20:52:36,006 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-15 20:52:36,007 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-15 20:52:36,007 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-15 20:52:36,007 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-15 20:52:36,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-15 20:52:36,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-15 20:52:36,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-15 20:52:36,009 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-15 20:52:36,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:52:36 BoogieIcfgContainer [2019-11-15 20:52:36,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:52:36,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:52:36,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:52:36,012 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:52:36,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:52:11" (3/4) ... [2019-11-15 20:52:36,015 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 20:52:36,023 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-15 20:52:36,023 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 20:52:36,047 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((b == u && 1 <= a) && x * u + y * v == a * 2 * b) && a == x) && (\exists v_ULTIMATE.start_main_#t~ret0_8 : int :: v_ULTIMATE.start_main_#t~ret0_8 % 4294967296 == a && v_ULTIMATE.start_main_#t~ret0_8 % 4294967296 <= 2147483647) && (\exists v_ULTIMATE.start_main_#t~ret1_9 : int :: v_ULTIMATE.start_main_#t~ret1_9 % 4294967296 <= 2147483647 && b == v_ULTIMATE.start_main_#t~ret1_9 % 4294967296)) && 1 <= b) && a == v) || (1 == cond && x * u + y * v == a * 2 * b) [2019-11-15 20:52:36,062 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a0daf87a-04df-4ad3-b832-ea7fcb4f05c7/bin/uautomizer/witness.graphml [2019-11-15 20:52:36,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:52:36,064 INFO L168 Benchmark]: Toolchain (without parser) took 25146.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -106.7 MB). Peak memory consumption was 64.3 MB. Max. memory is 11.5 GB. [2019-11-15 20:52:36,064 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:52:36,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -193.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:52:36,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:52:36,066 INFO L168 Benchmark]: Boogie Preprocessor took 30.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:52:36,066 INFO L168 Benchmark]: RCFGBuilder took 265.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:52:36,067 INFO L168 Benchmark]: TraceAbstraction took 24510.94 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 28.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 68.0 MB). Peak memory consumption was 96.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:52:36,067 INFO L168 Benchmark]: Witness Printer took 50.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:52:36,069 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 246.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -193.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 265.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24510.94 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 28.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 68.0 MB). Peak memory consumption was 96.8 MB. Max. memory is 11.5 GB. * Witness Printer took 50.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 == cond && x * u + y * v == a * 2 * b - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant [2019-11-15 20:52:36,076 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-15 20:52:36,076 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-15 20:52:36,076 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-15 20:52:36,077 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-15 20:52:36,077 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-15 20:52:36,078 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-15 20:52:36,078 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-15 20:52:36,078 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] Derived loop invariant: ((((((b == u && 1 <= a) && x * u + y * v == a * 2 * b) && a == x) && (\exists v_ULTIMATE.start_main_#t~ret0_8 : int :: v_ULTIMATE.start_main_#t~ret0_8 % 4294967296 == a && v_ULTIMATE.start_main_#t~ret0_8 % 4294967296 <= 2147483647) && (\exists v_ULTIMATE.start_main_#t~ret1_9 : int :: v_ULTIMATE.start_main_#t~ret1_9 % 4294967296 <= 2147483647 && b == v_ULTIMATE.start_main_#t~ret1_9 % 4294967296)) && 1 <= b) && a == v) || (1 == cond && x * u + y * v == a * 2 * b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Result: SAFE, OverallTime: 24.4s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, HoareTripleCheckerStatistics: 53 SDtfs, 107 SDslu, 171 SDs, 0 SdLazy, 460 SolverSat, 106 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 51 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 18 NumberOfFragments, 92 HoareAnnotationTreeSize, 4 FomulaSimplifications, 6254 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 200 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 106 ConstructedInterpolants, 68 QuantifiedInterpolants, 44880 SizeOfPredicates, 95 NumberOfNonLiveVariables, 421 ConjunctsInSsa, 255 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 35/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...