./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --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-cad4683 [2019-11-15 23:48:54,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:48:54,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:48:54,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:48:54,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:48:54,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:48:54,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:48:54,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:48:54,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:48:54,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:48:54,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:48:54,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:48:54,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:48:54,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:48:54,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:48:54,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:48:54,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:48:54,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:48:54,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:48:54,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:48:54,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:48:54,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:48:54,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:48:54,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:48:54,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:48:54,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:48:54,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:48:54,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:48:54,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:48:54,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:48:54,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:48:54,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:48:54,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:48:54,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:48:54,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:48:54,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:48:54,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:48:54,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:48:54,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:48:54,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:48:54,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:48:54,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-15 23:48:54,630 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:48:54,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:48:54,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:48:54,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:48:54,632 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:48:54,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:48:54,632 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:48:54,632 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:48:54,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:48:54,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:48:54,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:48:54,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:48:54,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:48:54,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:48:54,634 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-15 23:48:54,634 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:48:54,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:48:54,635 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:48:54,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:48:54,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:48:54,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:48:54,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:48:54,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:48:54,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:48:54,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:48:54,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:48:54,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:48:54,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:48:54,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:48:54,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:48:54,638 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_d7560af6-96ef-4e8d-ad3e-e1d463d98453/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 ! overflow) ) 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 [2019-11-15 23:48:54,666 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:48:54,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:48:54,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:48:54,682 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:48:54,682 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:48:54,683 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer/../../sv-benchmarks/c/bitvector/gcd_4.c [2019-11-15 23:48:54,738 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer/data/7b8174071/abd3cbdd198745a8ab598dabcebaafcb/FLAG3a0fa35d7 [2019-11-15 23:48:55,113 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:48:55,114 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/sv-benchmarks/c/bitvector/gcd_4.c [2019-11-15 23:48:55,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer/data/7b8174071/abd3cbdd198745a8ab598dabcebaafcb/FLAG3a0fa35d7 [2019-11-15 23:48:55,472 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer/data/7b8174071/abd3cbdd198745a8ab598dabcebaafcb [2019-11-15 23:48:55,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:48:55,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:48:55,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:48:55,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:48:55,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:48:55,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:48:55" (1/1) ... [2019-11-15 23:48:55,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2e450f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55, skipping insertion in model container [2019-11-15 23:48:55,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:48:55" (1/1) ... [2019-11-15 23:48:55,500 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:48:55,520 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:48:55,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:48:55,715 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:48:55,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:48:55,810 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:48:55,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55 WrapperNode [2019-11-15 23:48:55,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:48:55,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:48:55,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:48:55,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:48:55,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55" (1/1) ... [2019-11-15 23:48:55,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55" (1/1) ... [2019-11-15 23:48:55,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:48:55,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:48:55,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:48:55,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:48:55,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55" (1/1) ... [2019-11-15 23:48:55,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55" (1/1) ... [2019-11-15 23:48:55,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55" (1/1) ... [2019-11-15 23:48:55,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55" (1/1) ... [2019-11-15 23:48:55,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55" (1/1) ... [2019-11-15 23:48:55,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55" (1/1) ... [2019-11-15 23:48:55,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55" (1/1) ... [2019-11-15 23:48:55,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:48:55,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:48:55,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:48:55,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:48:55,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/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 23:48:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:48:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:48:56,154 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:48:56,155 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-15 23:48:56,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:48:56 BoogieIcfgContainer [2019-11-15 23:48:56,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:48:56,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:48:56,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:48:56,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:48:56,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:48:55" (1/3) ... [2019-11-15 23:48:56,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3375dec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:48:56, skipping insertion in model container [2019-11-15 23:48:56,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:48:55" (2/3) ... [2019-11-15 23:48:56,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3375dec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:48:56, skipping insertion in model container [2019-11-15 23:48:56,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:48:56" (3/3) ... [2019-11-15 23:48:56,163 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2019-11-15 23:48:56,173 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:48:56,179 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-15 23:48:56,199 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-15 23:48:56,223 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:48:56,223 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:48:56,223 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:48:56,223 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:48:56,224 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:48:56,224 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:48:56,224 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:48:56,224 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:48:56,241 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-15 23:48:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-15 23:48:56,252 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:48:56,253 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-15 23:48:56,255 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:48:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:48:56,261 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-15 23:48:56,269 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:48:56,269 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260621843] [2019-11-15 23:48:56,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:56,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:56,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:48:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:56,386 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 23:48:56,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260621843] [2019-11-15 23:48:56,387 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:48:56,388 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:48:56,388 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137044921] [2019-11-15 23:48:56,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:48:56,392 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:48:56,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:48:56,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:48:56,408 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2019-11-15 23:48:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:48:56,510 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2019-11-15 23:48:56,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:48:56,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-15 23:48:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:48:56,521 INFO L225 Difference]: With dead ends: 90 [2019-11-15 23:48:56,521 INFO L226 Difference]: Without dead ends: 28 [2019-11-15 23:48:56,523 INFO L600 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 [2019-11-15 23:48:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-15 23:48:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2019-11-15 23:48:56,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 23:48:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-15 23:48:56,551 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 3 [2019-11-15 23:48:56,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:48:56,551 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-15 23:48:56,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:48:56,552 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-15 23:48:56,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-15 23:48:56,552 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:48:56,552 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-15 23:48:56,553 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:48:56,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:48:56,553 INFO L82 PathProgramCache]: Analyzing trace with hash 963371, now seen corresponding path program 1 times [2019-11-15 23:48:56,554 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:48:56,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032102729] [2019-11-15 23:48:56,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:56,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:56,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:48:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:56,590 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 23:48:56,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032102729] [2019-11-15 23:48:56,591 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:48:56,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:48:56,591 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415091254] [2019-11-15 23:48:56,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:48:56,593 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:48:56,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:48:56,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:48:56,593 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2019-11-15 23:48:56,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:48:56,664 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-11-15 23:48:56,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:48:56,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-15 23:48:56,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:48:56,665 INFO L225 Difference]: With dead ends: 39 [2019-11-15 23:48:56,665 INFO L226 Difference]: Without dead ends: 24 [2019-11-15 23:48:56,666 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:48:56,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-15 23:48:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2019-11-15 23:48:56,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-15 23:48:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-15 23:48:56,670 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2019-11-15 23:48:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:48:56,670 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-15 23:48:56,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:48:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-15 23:48:56,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-15 23:48:56,671 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:48:56,671 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:48:56,671 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:48:56,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:48:56,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1359081932, now seen corresponding path program 1 times [2019-11-15 23:48:56,672 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:48:56,672 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722996695] [2019-11-15 23:48:56,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:56,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:56,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:48:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:56,715 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 23:48:56,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722996695] [2019-11-15 23:48:56,715 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:48:56,716 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-15 23:48:56,716 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051387313] [2019-11-15 23:48:56,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:48:56,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:48:56,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:48:56,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:48:56,717 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2019-11-15 23:48:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:48:56,756 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-11-15 23:48:56,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:48:56,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-15 23:48:56,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:48:56,758 INFO L225 Difference]: With dead ends: 28 [2019-11-15 23:48:56,758 INFO L226 Difference]: Without dead ends: 18 [2019-11-15 23:48:56,758 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:48:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-15 23:48:56,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-15 23:48:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 23:48:56,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-15 23:48:56,762 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 7 [2019-11-15 23:48:56,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:48:56,763 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-15 23:48:56,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:48:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-15 23:48:56,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:48:56,764 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:48:56,764 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:48:56,765 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:48:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:48:56,765 INFO L82 PathProgramCache]: Analyzing trace with hash -934966417, now seen corresponding path program 1 times [2019-11-15 23:48:56,765 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:48:56,765 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220200246] [2019-11-15 23:48:56,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:56,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:56,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:48:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:48:56,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220200246] [2019-11-15 23:48:56,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660848581] [2019-11-15 23:48:56,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/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 23:48:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:56,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:48:56,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:48:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:48:56,939 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:48:56,939 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2019-11-15 23:48:56,939 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573061687] [2019-11-15 23:48:56,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:48:56,940 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:48:56,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:48:56,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:48:56,940 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2019-11-15 23:48:57,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:48:57,020 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2019-11-15 23:48:57,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:48:57,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-15 23:48:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:48:57,022 INFO L225 Difference]: With dead ends: 28 [2019-11-15 23:48:57,022 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 23:48:57,022 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:48:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 23:48:57,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-15 23:48:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-15 23:48:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-15 23:48:57,027 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2019-11-15 23:48:57,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:48:57,027 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-15 23:48:57,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:48:57,027 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-15 23:48:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:48:57,028 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:48:57,028 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:48:57,229 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:48:57,229 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:48:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:48:57,230 INFO L82 PathProgramCache]: Analyzing trace with hash -934966225, now seen corresponding path program 1 times [2019-11-15 23:48:57,230 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:48:57,230 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562504997] [2019-11-15 23:48:57,230 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:57,231 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:57,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:48:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:57,285 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 23:48:57,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562504997] [2019-11-15 23:48:57,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318369150] [2019-11-15 23:48:57,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/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 23:48:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:57,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:48:57,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:48:57,355 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 23:48:57,356 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:48:57,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2019-11-15 23:48:57,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328490652] [2019-11-15 23:48:57,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:48:57,357 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:48:57,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:48:57,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:48:57,358 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2019-11-15 23:48:57,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:48:57,427 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2019-11-15 23:48:57,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:48:57,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 23:48:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:48:57,428 INFO L225 Difference]: With dead ends: 40 [2019-11-15 23:48:57,428 INFO L226 Difference]: Without dead ends: 28 [2019-11-15 23:48:57,429 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:48:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-15 23:48:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-15 23:48:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:48:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-15 23:48:57,433 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 11 [2019-11-15 23:48:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:48:57,436 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-15 23:48:57,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:48:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-15 23:48:57,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:48:57,437 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:48:57,437 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-15 23:48:57,637 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:48:57,642 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:48:57,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:48:57,642 INFO L82 PathProgramCache]: Analyzing trace with hash -892996630, now seen corresponding path program 2 times [2019-11-15 23:48:57,643 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:48:57,643 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297305430] [2019-11-15 23:48:57,643 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:57,643 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:57,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:48:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:57,707 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 23:48:57,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297305430] [2019-11-15 23:48:57,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930284376] [2019-11-15 23:48:57,708 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/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 23:48:57,748 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:48:57,748 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:48:57,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 23:48:57,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:48:57,828 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 23:48:57,828 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:48:57,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2019-11-15 23:48:57,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104628631] [2019-11-15 23:48:57,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:48:57,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:48:57,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:48:57,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:48:57,829 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2019-11-15 23:48:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:48:57,910 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2019-11-15 23:48:57,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:48:57,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-15 23:48:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:48:57,911 INFO L225 Difference]: With dead ends: 44 [2019-11-15 23:48:57,911 INFO L226 Difference]: Without dead ends: 32 [2019-11-15 23:48:57,911 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:48:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-15 23:48:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-15 23:48:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-15 23:48:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-11-15 23:48:57,916 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 15 [2019-11-15 23:48:57,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:48:57,916 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-15 23:48:57,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:48:57,916 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-11-15 23:48:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 23:48:57,917 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:48:57,917 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-15 23:48:58,120 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:48:58,120 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:48:58,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:48:58,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1124468261, now seen corresponding path program 3 times [2019-11-15 23:48:58,121 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:48:58,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570464201] [2019-11-15 23:48:58,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:58,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:58,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:48:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:48:58,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570464201] [2019-11-15 23:48:58,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778741447] [2019-11-15 23:48:58,210 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/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 23:48:58,237 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-15 23:48:58,237 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:48:58,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 23:48:58,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:48:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-15 23:48:58,290 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:48:58,290 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2019-11-15 23:48:58,291 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978158372] [2019-11-15 23:48:58,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:48:58,291 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:48:58,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:48:58,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:48:58,292 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2019-11-15 23:48:58,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:48:58,357 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-15 23:48:58,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:48:58,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-15 23:48:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:48:58,359 INFO L225 Difference]: With dead ends: 32 [2019-11-15 23:48:58,359 INFO L226 Difference]: Without dead ends: 30 [2019-11-15 23:48:58,360 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:48:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-15 23:48:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-11-15 23:48:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:48:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-15 23:48:58,365 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 19 [2019-11-15 23:48:58,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:48:58,368 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-15 23:48:58,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:48:58,369 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-15 23:48:58,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 23:48:58,371 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:48:58,371 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:48:58,573 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:48:58,573 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:48:58,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:48:58,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1497309926, now seen corresponding path program 1 times [2019-11-15 23:48:58,574 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:48:58,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600476369] [2019-11-15 23:48:58,575 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:58,575 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:58,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:48:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:48:58,682 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600476369] [2019-11-15 23:48:58,682 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824328956] [2019-11-15 23:48:58,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/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 23:48:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:58,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 23:48:58,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:48:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:48:58,827 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:48:58,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2019-11-15 23:48:58,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074685461] [2019-11-15 23:48:58,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-15 23:48:58,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:48:58,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-15 23:48:58,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-15 23:48:58,829 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 13 states. [2019-11-15 23:48:58,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:48:58,970 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2019-11-15 23:48:58,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 23:48:58,974 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2019-11-15 23:48:58,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:48:58,975 INFO L225 Difference]: With dead ends: 49 [2019-11-15 23:48:58,975 INFO L226 Difference]: Without dead ends: 35 [2019-11-15 23:48:58,976 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-15 23:48:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-15 23:48:58,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-11-15 23:48:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-15 23:48:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-11-15 23:48:58,981 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2019-11-15 23:48:58,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:48:58,982 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-11-15 23:48:58,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-15 23:48:58,982 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-11-15 23:48:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-15 23:48:58,983 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:48:58,983 INFO L380 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-15 23:48:59,183 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:48:59,184 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:48:59,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:48:59,185 INFO L82 PathProgramCache]: Analyzing trace with hash -906966518, now seen corresponding path program 2 times [2019-11-15 23:48:59,185 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:48:59,185 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005586728] [2019-11-15 23:48:59,185 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:59,185 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:48:59,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:48:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:48:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:48:59,312 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005586728] [2019-11-15 23:48:59,312 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165562857] [2019-11-15 23:48:59,313 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/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 23:48:59,353 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:48:59,354 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:48:59,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-15 23:48:59,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:48:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:48:59,530 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:48:59,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2019-11-15 23:48:59,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946023370] [2019-11-15 23:48:59,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-15 23:48:59,531 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:48:59,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-15 23:48:59,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2019-11-15 23:48:59,532 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 17 states. [2019-11-15 23:49:00,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:49:00,306 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2019-11-15 23:49:00,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-15 23:49:00,307 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2019-11-15 23:49:00,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:49:00,309 INFO L225 Difference]: With dead ends: 61 [2019-11-15 23:49:00,309 INFO L226 Difference]: Without dead ends: 60 [2019-11-15 23:49:00,310 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2019-11-15 23:49:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-15 23:49:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2019-11-15 23:49:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-15 23:49:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2019-11-15 23:49:00,327 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 31 [2019-11-15 23:49:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:49:00,327 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2019-11-15 23:49:00,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-15 23:49:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2019-11-15 23:49:00,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-15 23:49:00,329 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:49:00,329 INFO L380 BasicCegarLoop]: trace histogram [9, 6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1] [2019-11-15 23:49:00,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:49:00,533 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:49:00,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:49:00,534 INFO L82 PathProgramCache]: Analyzing trace with hash -764331526, now seen corresponding path program 3 times [2019-11-15 23:49:00,534 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:49:00,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853856369] [2019-11-15 23:49:00,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:49:00,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:49:00,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:49:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:49:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:49:00,829 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853856369] [2019-11-15 23:49:00,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018058623] [2019-11-15 23:49:00,830 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/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 23:49:00,869 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-15 23:49:00,869 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:49:00,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:49:00,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:49:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-15 23:49:00,956 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:49:00,956 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2019-11-15 23:49:00,956 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079476846] [2019-11-15 23:49:00,957 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:49:00,957 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:49:00,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:49:00,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-11-15 23:49:00,958 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 6 states. [2019-11-15 23:49:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:49:01,002 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2019-11-15 23:49:01,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:49:01,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-11-15 23:49:01,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:49:01,003 INFO L225 Difference]: With dead ends: 47 [2019-11-15 23:49:01,003 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:49:01,004 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-11-15 23:49:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:49:01,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:49:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:49:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:49:01,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-11-15 23:49:01,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:49:01,005 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:49:01,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:49:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:49:01,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:49:01,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:49:01,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 23:49:01,258 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-11-15 23:49:01,258 INFO L443 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-15 23:49:01,259 INFO L443 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-15 23:49:01,259 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-15 23:49:01,259 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2019-11-15 23:49:01,259 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-11-15 23:49:01,259 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 23:49:01,259 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 23:49:01,259 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-15 23:49:01,260 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2019-11-15 23:49:01,260 INFO L439 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: (and (<= ULTIMATE.start_gcd_test_~a 2147483647) (<= 0 ULTIMATE.start_gcd_test_~b) (<= 1 ULTIMATE.start_gcd_test_~a) (<= ULTIMATE.start_gcd_test_~b 18)) [2019-11-15 23:49:01,260 INFO L446 ceAbstractionStarter]: At program point L45(lines 30 46) the Hoare annotation is: true [2019-11-15 23:49:01,260 INFO L443 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2019-11-15 23:49:01,260 INFO L443 ceAbstractionStarter]: For program point L12-1(line 12) no Hoare annotation was computed. [2019-11-15 23:49:01,260 INFO L443 ceAbstractionStarter]: For program point L12-2(line 12) no Hoare annotation was computed. [2019-11-15 23:49:01,260 INFO L443 ceAbstractionStarter]: For program point L12-4(lines 11 27) no Hoare annotation was computed. [2019-11-15 23:49:01,261 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 23:49:01,261 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-15 23:49:01,261 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 12) no Hoare annotation was computed. [2019-11-15 23:49:01,261 INFO L443 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-11-15 23:49:01,261 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-15 23:49:01,261 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-15 23:49:01,261 INFO L443 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-15 23:49:01,261 INFO L443 ceAbstractionStarter]: For program point L13-3(lines 11 27) no Hoare annotation was computed. [2019-11-15 23:49:01,261 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-15 23:49:01,262 INFO L446 ceAbstractionStarter]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2019-11-15 23:49:01,262 INFO L443 ceAbstractionStarter]: For program point L5-3(lines 5 7) no Hoare annotation was computed. [2019-11-15 23:49:01,262 INFO L446 ceAbstractionStarter]: At program point L5-5(lines 4 9) the Hoare annotation is: true [2019-11-15 23:49:01,262 INFO L443 ceAbstractionStarter]: For program point L5-6(lines 5 7) no Hoare annotation was computed. [2019-11-15 23:49:01,262 INFO L446 ceAbstractionStarter]: At program point L5-8(lines 4 9) the Hoare annotation is: true [2019-11-15 23:49:01,262 INFO L446 ceAbstractionStarter]: At program point L26(lines 10 27) the Hoare annotation is: true [2019-11-15 23:49:01,262 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 12) no Hoare annotation was computed. [2019-11-15 23:49:01,262 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-15 23:49:01,262 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-15 23:49:01,263 INFO L443 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-11-15 23:49:01,263 INFO L443 ceAbstractionStarter]: For program point L6-2(line 6) no Hoare annotation was computed. [2019-11-15 23:49:01,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:49:01 BoogieIcfgContainer [2019-11-15 23:49:01,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:49:01,283 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:49:01,283 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:49:01,284 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:49:01,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:48:56" (3/4) ... [2019-11-15 23:49:01,287 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 23:49:01,297 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-15 23:49:01,297 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 23:49:01,359 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d7560af6-96ef-4e8d-ad3e-e1d463d98453/bin/uautomizer/witness.graphml [2019-11-15 23:49:01,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:49:01,362 INFO L168 Benchmark]: Toolchain (without parser) took 5880.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:49:01,366 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:49:01,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:01,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.73 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 23:49:01,367 INFO L168 Benchmark]: Boogie Preprocessor took 20.98 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:01,368 INFO L168 Benchmark]: RCFGBuilder took 282.69 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:01,368 INFO L168 Benchmark]: TraceAbstraction took 5125.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -63.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:01,369 INFO L168 Benchmark]: Witness Printer took 76.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:01,374 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 328.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.73 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 20.98 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 282.69 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5125.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -63.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Witness Printer took 76.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((a <= 2147483647 && 0 <= b) && 1 <= a) && b <= 18 - 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: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 8 error locations. Result: SAFE, OverallTime: 5.0s, OverallIterations: 10, TraceHistogramMax: 9, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 188 SDslu, 14 SDs, 0 SdLazy, 642 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=9, 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, 38 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 26 NumberOfFragments, 18 HoareAnnotationTreeSize, 6 FomulaSimplifications, 278 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 312 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 295 ConstructedInterpolants, 3 QuantifiedInterpolants, 52695 SizeOfPredicates, 25 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 176/446 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...