./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/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 9918b49e0d76e4ce36b6a6760021b33460a8ae9b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 05:39:03,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:39:03,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:39:03,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:39:03,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:39:03,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:39:03,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:39:03,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:39:03,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:39:03,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:39:03,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:39:03,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:39:03,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:39:03,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:39:03,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:39:03,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:39:03,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:39:03,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:39:03,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:39:03,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:39:03,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:39:03,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:39:03,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:39:03,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:39:03,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:39:03,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:39:03,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:39:03,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:39:03,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:39:03,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:39:03,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:39:03,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:39:03,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:39:03,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:39:03,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:39:03,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:39:03,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:39:03,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:39:03,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:39:03,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:39:03,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:39:03,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 05:39:03,454 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:39:03,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:39:03,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:39:03,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:39:03,456 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:39:03,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:39:03,456 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:39:03,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:39:03,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:39:03,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:39:03,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:39:03,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:39:03,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:39:03,458 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:39:03,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:39:03,458 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:39:03,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:39:03,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:39:03,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:39:03,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:39:03,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:39:03,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:39:03,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:39:03,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:39:03,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:39:03,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:39:03,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:39:03,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:39:03,461 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_5c753cd6-e038-4238-8ac8-b59dcd67d869/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 -> 9918b49e0d76e4ce36b6a6760021b33460a8ae9b [2019-11-20 05:39:03,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:39:03,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:39:03,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:39:03,627 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:39:03,627 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:39:03,627 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/bin/uautomizer/../../sv-benchmarks/c/bitvector/gcd_4.c [2019-11-20 05:39:03,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/bin/uautomizer/data/4a800519f/866dc36855f94ecf8a264a36aaa1b2b9/FLAGb0f2c110a [2019-11-20 05:39:04,105 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:39:04,106 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/sv-benchmarks/c/bitvector/gcd_4.c [2019-11-20 05:39:04,111 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/bin/uautomizer/data/4a800519f/866dc36855f94ecf8a264a36aaa1b2b9/FLAGb0f2c110a [2019-11-20 05:39:04,126 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/bin/uautomizer/data/4a800519f/866dc36855f94ecf8a264a36aaa1b2b9 [2019-11-20 05:39:04,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:39:04,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:39:04,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:39:04,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:39:04,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:39:04,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:39:04" (1/1) ... [2019-11-20 05:39:04,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a8b8bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04, skipping insertion in model container [2019-11-20 05:39:04,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:39:04" (1/1) ... [2019-11-20 05:39:04,150 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:39:04,163 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:39:04,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:39:04,293 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:39:04,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:39:04,385 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:39:04,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04 WrapperNode [2019-11-20 05:39:04,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:39:04,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:39:04,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:39:04,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:39:04,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04" (1/1) ... [2019-11-20 05:39:04,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04" (1/1) ... [2019-11-20 05:39:04,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:39:04,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:39:04,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:39:04,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:39:04,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04" (1/1) ... [2019-11-20 05:39:04,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04" (1/1) ... [2019-11-20 05:39:04,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04" (1/1) ... [2019-11-20 05:39:04,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04" (1/1) ... [2019-11-20 05:39:04,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04" (1/1) ... [2019-11-20 05:39:04,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04" (1/1) ... [2019-11-20 05:39:04,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04" (1/1) ... [2019-11-20 05:39:04,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:39:04,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:39:04,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:39:04,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:39:04,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/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 [2019-11-20 05:39:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:39:04,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:39:04,785 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:39:04,786 INFO L285 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-20 05:39:04,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:39:04 BoogieIcfgContainer [2019-11-20 05:39:04,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:39:04,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:39:04,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:39:04,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:39:04,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:39:04" (1/3) ... [2019-11-20 05:39:04,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305e3345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:39:04, skipping insertion in model container [2019-11-20 05:39:04,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:04" (2/3) ... [2019-11-20 05:39:04,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305e3345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:39:04, skipping insertion in model container [2019-11-20 05:39:04,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:39:04" (3/3) ... [2019-11-20 05:39:04,793 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2019-11-20 05:39:04,819 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:39:04,825 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-20 05:39:04,839 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-20 05:39:04,857 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:39:04,857 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:39:04,857 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:39:04,858 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:39:04,862 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:39:04,862 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:39:04,862 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:39:04,863 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:39:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-20 05:39:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 05:39:04,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:04,882 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:39:04,883 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:39:04,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:04,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1540385985, now seen corresponding path program 1 times [2019-11-20 05:39:04,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:39:04,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198773361] [2019-11-20 05:39:04,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:39:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:39:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:39:05,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198773361] [2019-11-20 05:39:05,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:39:05,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:39:05,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461189305] [2019-11-20 05:39:05,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:39:05,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:39:05,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:39:05,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:39:05,042 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-11-20 05:39:05,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:05,090 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2019-11-20 05:39:05,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:39:05,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-20 05:39:05,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:05,100 INFO L225 Difference]: With dead ends: 63 [2019-11-20 05:39:05,101 INFO L226 Difference]: Without dead ends: 34 [2019-11-20 05:39:05,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:39:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-20 05:39:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 19. [2019-11-20 05:39:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 05:39:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-20 05:39:05,130 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 7 [2019-11-20 05:39:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:05,130 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-20 05:39:05,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:39:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-20 05:39:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 05:39:05,131 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:05,131 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:39:05,131 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:39:05,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:05,132 INFO L82 PathProgramCache]: Analyzing trace with hash 687615503, now seen corresponding path program 1 times [2019-11-20 05:39:05,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:39:05,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347875106] [2019-11-20 05:39:05,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:39:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:39:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:39:05,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347875106] [2019-11-20 05:39:05,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:39:05,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:39:05,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386933207] [2019-11-20 05:39:05,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:39:05,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:39:05,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:39:05,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:39:05,160 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-11-20 05:39:05,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:05,179 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-11-20 05:39:05,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:39:05,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-20 05:39:05,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:05,181 INFO L225 Difference]: With dead ends: 37 [2019-11-20 05:39:05,181 INFO L226 Difference]: Without dead ends: 21 [2019-11-20 05:39:05,182 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:39:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-20 05:39:05,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-20 05:39:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 05:39:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-11-20 05:39:05,186 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2019-11-20 05:39:05,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:05,187 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-20 05:39:05,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:39:05,187 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-11-20 05:39:05,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 05:39:05,188 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:05,188 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:39:05,188 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:39:05,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:05,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1672373068, now seen corresponding path program 1 times [2019-11-20 05:39:05,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:39:05,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375024634] [2019-11-20 05:39:05,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:39:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:39:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:39:05,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375024634] [2019-11-20 05:39:05,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:39:05,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:39:05,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239143476] [2019-11-20 05:39:05,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:39:05,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:39:05,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:39:05,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:39:05,232 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2019-11-20 05:39:05,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:05,273 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2019-11-20 05:39:05,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:39:05,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-20 05:39:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:05,274 INFO L225 Difference]: With dead ends: 38 [2019-11-20 05:39:05,275 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 05:39:05,275 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:39:05,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 05:39:05,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-20 05:39:05,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-20 05:39:05,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-11-20 05:39:05,280 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 11 [2019-11-20 05:39:05,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:05,280 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-11-20 05:39:05,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:39:05,281 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-11-20 05:39:05,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 05:39:05,281 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:05,282 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:39:05,282 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:39:05,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:05,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1034091127, now seen corresponding path program 1 times [2019-11-20 05:39:05,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:39:05,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723849510] [2019-11-20 05:39:05,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:39:05,293 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 05:39:05,293 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211160064] [2019-11-20 05:39:05,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/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 [2019-11-20 05:39:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:39:05,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 05:39:05,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:39:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:39:05,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723849510] [2019-11-20 05:39:05,399 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 05:39:05,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211160064] [2019-11-20 05:39:05,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 05:39:05,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-20 05:39:05,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997337503] [2019-11-20 05:39:05,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 05:39:05,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:39:05,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 05:39:05,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:39:05,401 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2019-11-20 05:39:05,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:05,469 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-20 05:39:05,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:39:05,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-20 05:39:05,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:05,470 INFO L225 Difference]: With dead ends: 40 [2019-11-20 05:39:05,470 INFO L226 Difference]: Without dead ends: 25 [2019-11-20 05:39:05,471 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:39:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-20 05:39:05,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-20 05:39:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-20 05:39:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2019-11-20 05:39:05,475 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2019-11-20 05:39:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:05,476 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2019-11-20 05:39:05,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 05:39:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2019-11-20 05:39:05,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-20 05:39:05,477 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:05,477 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:39:05,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:39:05,686 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:39:05,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:05,686 INFO L82 PathProgramCache]: Analyzing trace with hash 803998854, now seen corresponding path program 2 times [2019-11-20 05:39:05,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:39:05,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003830984] [2019-11-20 05:39:05,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:39:05,709 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 05:39:05,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049114697] [2019-11-20 05:39:05,709 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/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 [2019-11-20 05:39:05,749 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 05:39:05,749 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:39:05,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 05:39:05,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:39:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:39:05,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003830984] [2019-11-20 05:39:05,847 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 05:39:05,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049114697] [2019-11-20 05:39:05,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 05:39:05,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-20 05:39:05,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931790002] [2019-11-20 05:39:05,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 05:39:05,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:39:05,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 05:39:05,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:39:05,849 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2019-11-20 05:39:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:05,933 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-11-20 05:39:05,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 05:39:05,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-20 05:39:05,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:05,937 INFO L225 Difference]: With dead ends: 42 [2019-11-20 05:39:05,937 INFO L226 Difference]: Without dead ends: 27 [2019-11-20 05:39:05,938 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:39:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-20 05:39:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-20 05:39:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 05:39:05,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-11-20 05:39:05,946 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 15 [2019-11-20 05:39:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:05,946 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-11-20 05:39:05,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 05:39:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-11-20 05:39:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 05:39:05,947 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:05,948 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:39:06,148 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:39:06,148 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:39:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1976911939, now seen corresponding path program 3 times [2019-11-20 05:39:06,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:39:06,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262176562] [2019-11-20 05:39:06,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:39:06,160 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 05:39:06,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628494903] [2019-11-20 05:39:06,163 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/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 [2019-11-20 05:39:06,210 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-20 05:39:06,210 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:39:06,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 05:39:06,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:39:06,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:39:06,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262176562] [2019-11-20 05:39:06,282 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 05:39:06,282 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628494903] [2019-11-20 05:39:06,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 05:39:06,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-20 05:39:06,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308173548] [2019-11-20 05:39:06,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:39:06,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:39:06,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:39:06,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:39:06,283 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2019-11-20 05:39:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:06,339 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-11-20 05:39:06,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:39:06,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-20 05:39:06,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:06,342 INFO L225 Difference]: With dead ends: 46 [2019-11-20 05:39:06,342 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 05:39:06,342 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:39:06,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 05:39:06,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 05:39:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 05:39:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-20 05:39:06,347 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 17 [2019-11-20 05:39:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:06,347 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-20 05:39:06,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:39:06,348 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-20 05:39:06,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 05:39:06,348 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:06,348 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:39:06,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:39:06,558 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:39:06,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:06,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1239358850, now seen corresponding path program 4 times [2019-11-20 05:39:06,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:39:06,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807773522] [2019-11-20 05:39:06,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:39:06,567 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 05:39:06,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969672089] [2019-11-20 05:39:06,567 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/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 [2019-11-20 05:39:06,606 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 05:39:06,606 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:39:06,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-20 05:39:06,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:39:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 05:39:06,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807773522] [2019-11-20 05:39:06,703 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 05:39:06,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969672089] [2019-11-20 05:39:06,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 05:39:06,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-20 05:39:06,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077659278] [2019-11-20 05:39:06,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 05:39:06,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:39:06,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 05:39:06,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:39:06,705 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 8 states. [2019-11-20 05:39:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:06,895 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2019-11-20 05:39:06,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:39:06,897 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-20 05:39:06,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:06,899 INFO L225 Difference]: With dead ends: 46 [2019-11-20 05:39:06,899 INFO L226 Difference]: Without dead ends: 44 [2019-11-20 05:39:06,899 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:39:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-20 05:39:06,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2019-11-20 05:39:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-20 05:39:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-11-20 05:39:06,905 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2019-11-20 05:39:06,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:06,908 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-11-20 05:39:06,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 05:39:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-11-20 05:39:06,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-20 05:39:06,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:06,910 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:39:07,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:39:07,111 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:39:07,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:07,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1317757439, now seen corresponding path program 1 times [2019-11-20 05:39:07,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:39:07,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563014539] [2019-11-20 05:39:07,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:39:07,119 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 05:39:07,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079238313] [2019-11-20 05:39:07,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/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 [2019-11-20 05:39:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:39:07,156 WARN L253 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-20 05:39:07,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:39:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 05:39:07,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563014539] [2019-11-20 05:39:07,343 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 05:39:07,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079238313] [2019-11-20 05:39:07,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 05:39:07,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-20 05:39:07,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238813051] [2019-11-20 05:39:07,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 05:39:07,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:39:07,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 05:39:07,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-11-20 05:39:07,345 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 10 states. [2019-11-20 05:39:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:07,534 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2019-11-20 05:39:07,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:39:07,535 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2019-11-20 05:39:07,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:07,535 INFO L225 Difference]: With dead ends: 50 [2019-11-20 05:39:07,535 INFO L226 Difference]: Without dead ends: 34 [2019-11-20 05:39:07,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-11-20 05:39:07,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-20 05:39:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-11-20 05:39:07,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 05:39:07,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-20 05:39:07,542 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2019-11-20 05:39:07,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:07,542 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-20 05:39:07,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 05:39:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-20 05:39:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-20 05:39:07,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:07,543 INFO L410 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:39:07,746 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:39:07,752 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:39:07,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:07,752 INFO L82 PathProgramCache]: Analyzing trace with hash 243607739, now seen corresponding path program 5 times [2019-11-20 05:39:07,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:39:07,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500704669] [2019-11-20 05:39:07,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:39:07,760 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 05:39:07,760 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152952691] [2019-11-20 05:39:07,760 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/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 [2019-11-20 05:39:07,790 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-20 05:39:07,790 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:39:07,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 05:39:07,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:39:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-20 05:39:07,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500704669] [2019-11-20 05:39:07,801 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 05:39:07,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152952691] [2019-11-20 05:39:07,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:39:07,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 05:39:07,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36943903] [2019-11-20 05:39:07,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:39:07,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:39:07,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:39:07,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:39:07,802 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 3 states. [2019-11-20 05:39:07,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:07,819 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-11-20 05:39:07,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:39:07,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-20 05:39:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:07,821 INFO L225 Difference]: With dead ends: 47 [2019-11-20 05:39:07,821 INFO L226 Difference]: Without dead ends: 34 [2019-11-20 05:39:07,826 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:39:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-20 05:39:07,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-11-20 05:39:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 05:39:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-11-20 05:39:07,830 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 21 [2019-11-20 05:39:07,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:07,830 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-11-20 05:39:07,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:39:07,830 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-11-20 05:39:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-20 05:39:07,831 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:39:07,831 INFO L410 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:39:08,038 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:39:08,039 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:39:08,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:39:08,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1110212667, now seen corresponding path program 6 times [2019-11-20 05:39:08,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:39:08,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495957418] [2019-11-20 05:39:08,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:39:08,047 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 05:39:08,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867174452] [2019-11-20 05:39:08,048 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/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 [2019-11-20 05:39:08,089 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-11-20 05:39:08,089 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:39:08,090 WARN L253 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-20 05:39:08,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:39:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 05:39:08,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495957418] [2019-11-20 05:39:08,213 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 05:39:08,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867174452] [2019-11-20 05:39:08,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 05:39:08,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-11-20 05:39:08,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268614627] [2019-11-20 05:39:08,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 05:39:08,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:39:08,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 05:39:08,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:39:08,214 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 11 states. [2019-11-20 05:39:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:39:08,324 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-11-20 05:39:08,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:39:08,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2019-11-20 05:39:08,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:39:08,325 INFO L225 Difference]: With dead ends: 33 [2019-11-20 05:39:08,325 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 05:39:08,326 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-11-20 05:39:08,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 05:39:08,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 05:39:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 05:39:08,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 05:39:08,326 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-11-20 05:39:08,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:39:08,326 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:39:08,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 05:39:08,327 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 05:39:08,327 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 05:39:08,527 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:39:08,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 05:39:08,780 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2019-11-20 05:39:08,804 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-20 05:39:08,804 INFO L444 ceAbstractionStarter]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2019-11-20 05:39:08,804 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 05:39:08,804 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 05:39:08,804 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-20 05:39:08,804 INFO L444 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2019-11-20 05:39:08,805 INFO L440 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_gcd_test_~b 18)) (.cse3 (= ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_main_~x~0 63)) (.cse2 (= ULTIMATE.start_main_~y~0 18)) (.cse4 (= 72 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_gcd_test_~a)))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ (* 3 ULTIMATE.start_gcd_test_~b) ULTIMATE.start_gcd_test_~a))) (and .cse2 .cse0 .cse1 (= ULTIMATE.start_gcd_test_~a ULTIMATE.start_main_~x~0)) (and .cse3 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ (* 2 ULTIMATE.start_gcd_test_~b) ULTIMATE.start_gcd_test_~a))) (and .cse3 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_gcd_test_~a))) (and (= (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~x~0 ULTIMATE.start_gcd_test_~a) 72) .cse1 .cse2 .cse4) (and .cse1 (= (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_main_~x~0) 72) .cse2 .cse4))) [2019-11-20 05:39:08,805 INFO L447 ceAbstractionStarter]: At program point L45(lines 30 46) the Hoare annotation is: true [2019-11-20 05:39:08,805 INFO L444 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2019-11-20 05:39:08,805 INFO L444 ceAbstractionStarter]: For program point L12-2(lines 11 27) no Hoare annotation was computed. [2019-11-20 05:39:08,805 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 05:39:08,805 INFO L444 ceAbstractionStarter]: For program point L13-1(lines 11 27) no Hoare annotation was computed. [2019-11-20 05:39:08,805 INFO L444 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-20 05:39:08,805 INFO L440 ceAbstractionStarter]: At program point L5-2(lines 4 9) the Hoare annotation is: (let ((.cse0 (* 3 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_main_~x~0 (+ .cse0 ULTIMATE.start_gcd_test_~a)) (= ULTIMATE.start_main_~x~0 63) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 18) (= 63 (+ ULTIMATE.start_main_~g~0 .cse0)) (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) ULTIMATE.start_main_~x~0))) [2019-11-20 05:39:08,806 INFO L444 ceAbstractionStarter]: For program point L5-3(lines 5 7) no Hoare annotation was computed. [2019-11-20 05:39:08,806 INFO L440 ceAbstractionStarter]: At program point L5-5(lines 4 9) the Hoare annotation is: (let ((.cse0 (* 3 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_main_~x~0 (+ .cse0 ULTIMATE.start_gcd_test_~a)) (= ULTIMATE.start_main_~x~0 63) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 18) (= 63 (+ ULTIMATE.start_main_~g~0 .cse0)) (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) ULTIMATE.start_main_~x~0))) [2019-11-20 05:39:08,806 INFO L444 ceAbstractionStarter]: For program point L5-6(lines 5 7) no Hoare annotation was computed. [2019-11-20 05:39:08,806 INFO L447 ceAbstractionStarter]: At program point L5-8(lines 4 9) the Hoare annotation is: true [2019-11-20 05:39:08,806 INFO L440 ceAbstractionStarter]: At program point L26(lines 10 27) the Hoare annotation is: (let ((.cse0 (* 3 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_main_~x~0 (+ .cse0 ULTIMATE.start_gcd_test_~a)) (= ULTIMATE.start_main_~x~0 63) (= ULTIMATE.start_main_~y~0 18) (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) ULTIMATE.start_main_~x~0))) [2019-11-20 05:39:08,806 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-20 05:39:08,806 INFO L444 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-20 05:39:08,806 INFO L444 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-11-20 05:39:08,807 INFO L444 ceAbstractionStarter]: For program point L6-2(line 6) no Hoare annotation was computed. [2019-11-20 05:39:08,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:39:08 BoogieIcfgContainer [2019-11-20 05:39:08,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:39:08,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:39:08,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:39:08,822 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:39:08,823 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:39:04" (3/4) ... [2019-11-20 05:39:08,826 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 05:39:08,842 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-20 05:39:08,843 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 05:39:08,888 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == 3 * y + a && x == 63) && y == 18) && \result + 3 * y == x [2019-11-20 05:39:08,888 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == 3 * y + a && x == 63) && 1 == cond) && y == 18) && 63 == g + 3 * y) && \result + 3 * y == x [2019-11-20 05:39:08,888 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == 3 * y + a && x == 63) && 1 == cond) && y == 18) && 63 == g + 3 * y) && \result + 3 * y == x [2019-11-20 05:39:08,908 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5c753cd6-e038-4238-8ac8-b59dcd67d869/bin/uautomizer/witness.graphml [2019-11-20 05:39:08,909 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:39:08,910 INFO L168 Benchmark]: Toolchain (without parser) took 4779.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 951.4 MB in the beginning and 801.9 MB in the end (delta: 149.5 MB). Peak memory consumption was 278.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:39:08,910 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:39:08,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -167.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:39:08,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.78 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. [2019-11-20 05:39:08,912 INFO L168 Benchmark]: Boogie Preprocessor took 20.36 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. [2019-11-20 05:39:08,912 INFO L168 Benchmark]: RCFGBuilder took 347.16 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: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:39:08,913 INFO L168 Benchmark]: TraceAbstraction took 4033.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 809.0 MB in the end (delta: 285.9 MB). Peak memory consumption was 285.9 MB. Max. memory is 11.5 GB. [2019-11-20 05:39:08,913 INFO L168 Benchmark]: Witness Printer took 86.75 ms. Allocated memory is still 1.2 GB. Free memory was 809.0 MB in the beginning and 801.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-20 05:39:08,915 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -167.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.78 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 20.36 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 347.16 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: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4033.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 809.0 MB in the end (delta: 285.9 MB). Peak memory consumption was 285.9 MB. Max. memory is 11.5 GB. * Witness Printer took 86.75 ms. Allocated memory is still 1.2 GB. Free memory was 809.0 MB in the beginning and 801.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((x == 3 * y + a && x == 63) && y == 18) && \result + 3 * y == x - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: ((((x == 3 * y + a && x == 63) && 1 == cond) && y == 18) && 63 == g + 3 * y) && \result + 3 * y == x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((((((b == 18 && x == 63) && y == 18) && x == 3 * b + a) || (((y == 18 && b == 18) && x == 63) && a == x)) || (((b == y && x == 63) && y == 18) && x == 2 * b + a)) || (((b == y && x == 63) && y == 18) && x == b + a)) || (((b + x + a == 72 && x == 63) && y == 18) && 72 == x + a)) || (((x == 63 && b + x == 72) && y == 18) && 72 == x + a) - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: ((((x == 3 * y + a && x == 63) && 1 == cond) && y == 18) && 63 == g + 3 * y) && \result + 3 * y == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 3 error locations. Result: SAFE, OverallTime: 3.9s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 133 SDtfs, 91 SDslu, 267 SDs, 0 SdLazy, 467 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=7, 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, 29 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 20 NumberOfFragments, 183 HoareAnnotationTreeSize, 6 FomulaSimplifications, 157 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 126 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 154 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 144 ConstructedInterpolants, 2 QuantifiedInterpolants, 16350 SizeOfPredicates, 50 NumberOfNonLiveVariables, 349 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 67/152 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...