./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/modulus-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e27c7bb6749f8e5b84d1a08471e4a4b137cd36c4eaed216d5d03e50d41359cea --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:49:49,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:49:49,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:49:49,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:49:49,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:49:49,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:49:49,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:49:49,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:49:49,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:49:49,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:49:49,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:49:49,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:49:49,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:49:49,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:49:49,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:49:49,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:49:49,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:49:49,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:49:49,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:49:49,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:49:49,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:49:49,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:49:49,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:49:49,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:49:49,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:49:49,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:49:49,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:49:49,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:49:49,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:49:49,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:49:49,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:49:49,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:49:49,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:49:49,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:49:49,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:49:49,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:49:49,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:49:49,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:49:49,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:49:49,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:49:49,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:49:49,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:49:49,501 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:49:49,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:49:49,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:49:49,512 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:49:49,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:49:49,512 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:49:49,513 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:49:49,513 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:49:49,519 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:49:49,519 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:49:49,520 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:49:49,520 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:49:49,521 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:49:49,521 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:49:49,521 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:49:49,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:49:49,522 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:49:49,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:49:49,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:49:49,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:49:49,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:49:49,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:49:49,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:49:49,524 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:49:49,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:49:49,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:49:49,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:49:49,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:49:49,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:49:49,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:49:49,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:49:49,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:49:49,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:49:49,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:49:49,528 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:49:49,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:49:49,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:49:49,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:49:49,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:49:49,529 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e27c7bb6749f8e5b84d1a08471e4a4b137cd36c4eaed216d5d03e50d41359cea [2021-11-03 03:49:49,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:49:49,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:49:49,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:49:49,840 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:49:49,841 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:49:49,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/bitvector/modulus-2.i [2021-11-03 03:49:49,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/data/8b7b49b19/37c302161d4c4e2a99ac045de7b6b3f8/FLAG605db02ab [2021-11-03 03:49:50,388 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:49:50,388 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/sv-benchmarks/c/bitvector/modulus-2.i [2021-11-03 03:49:50,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/data/8b7b49b19/37c302161d4c4e2a99ac045de7b6b3f8/FLAG605db02ab [2021-11-03 03:49:50,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/data/8b7b49b19/37c302161d4c4e2a99ac045de7b6b3f8 [2021-11-03 03:49:50,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:49:50,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:49:50,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:49:50,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:49:50,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:49:50,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:49:50" (1/1) ... [2021-11-03 03:49:50,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfdd818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:50, skipping insertion in model container [2021-11-03 03:49:50,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:49:50" (1/1) ... [2021-11-03 03:49:50,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:49:50,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:49:50,969 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-11-03 03:49:50,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:49:50,991 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:49:51,003 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-11-03 03:49:51,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:49:51,022 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:49:51,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51 WrapperNode [2021-11-03 03:49:51,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:49:51,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:49:51,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:49:51,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:49:51,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51" (1/1) ... [2021-11-03 03:49:51,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51" (1/1) ... [2021-11-03 03:49:51,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:49:51,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:49:51,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:49:51,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:49:51,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51" (1/1) ... [2021-11-03 03:49:51,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51" (1/1) ... [2021-11-03 03:49:51,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51" (1/1) ... [2021-11-03 03:49:51,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51" (1/1) ... [2021-11-03 03:49:51,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51" (1/1) ... [2021-11-03 03:49:51,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51" (1/1) ... [2021-11-03 03:49:51,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51" (1/1) ... [2021-11-03 03:49:51,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:49:51,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:49:51,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:49:51,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:49:51,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51" (1/1) ... [2021-11-03 03:49:51,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:49:51,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:49:51,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:49:51,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:49:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:49:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:49:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:49:51,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:49:51,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:49:51,448 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-03 03:49:51,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:49:51 BoogieIcfgContainer [2021-11-03 03:49:51,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:49:51,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:49:51,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:49:51,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:49:51,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:49:50" (1/3) ... [2021-11-03 03:49:51,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2b2da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:49:51, skipping insertion in model container [2021-11-03 03:49:51,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:51" (2/3) ... [2021-11-03 03:49:51,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2b2da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:49:51, skipping insertion in model container [2021-11-03 03:49:51,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:49:51" (3/3) ... [2021-11-03 03:49:51,459 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2021-11-03 03:49:51,464 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:49:51,465 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:49:51,519 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:49:51,525 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:49:51,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:49:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 03:49:51,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:49:51,543 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 03:49:51,543 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:49:51,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:49:51,549 INFO L85 PathProgramCache]: Analyzing trace with hash 96472452, now seen corresponding path program 1 times [2021-11-03 03:49:51,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:49:51,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432743405] [2021-11-03 03:49:51,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:49:51,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:49:51,675 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 03:49:51,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966662348] [2021-11-03 03:49:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:49:51,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:49:51,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:49:51,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:49:51,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 03:49:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:49:51,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:49:51,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:49:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:53,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:49:53,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:49:53,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432743405] [2021-11-03 03:49:53,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:49:53,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966662348] [2021-11-03 03:49:53,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger: modulus not positive [2021-11-03 03:49:53,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1516323664] [2021-11-03 03:49:53,235 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-03 03:49:53,246 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:49:53,251 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:49:53,257 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:49:53,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:49:53,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,306 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:49:53,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:49:53,308 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:49:53,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:49:53,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-03 03:49:53,343 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 10=[|v_#valid_13|]} [2021-11-03 03:49:53,354 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:49:53,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:49:53,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:49:53,357 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:49:53,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:53,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:49:53,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:49:53,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:49:53,376 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:49:53,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:53,415 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:53,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:53,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:53,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:53,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:49:53,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:49:53,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:49:53,442 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 03:49:53,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:53,467 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 03:49:53,470 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:49:53,471 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:204, output treesize:86 [2021-11-03 03:49:53,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:53,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-03 03:49:53,500 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:49:54,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1516323664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:49:54,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:49:54,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:49:54,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889710857] [2021-11-03 03:49:54,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:49:54,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:49:54,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:49:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:49:54,079 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:49:54,153 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-03 03:49:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:49:54,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 03:49:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:49:54,166 INFO L225 Difference]: With dead ends: 17 [2021-11-03 03:49:54,166 INFO L226 Difference]: Without dead ends: 8 [2021-11-03 03:49:54,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:49:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-03 03:49:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-03 03:49:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-11-03 03:49:54,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-11-03 03:49:54,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:49:54,203 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-03 03:49:54,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-03 03:49:54,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 03:49:54,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:49:54,205 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:49:54,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:49:54,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-03 03:49:54,425 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:49:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:49:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1823918953, now seen corresponding path program 1 times [2021-11-03 03:49:54,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:49:54,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757659841] [2021-11-03 03:49:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:49:54,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:49:54,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 03:49:54,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455779783] [2021-11-03 03:49:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:49:54,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:49:54,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:49:54,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:49:54,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 03:49:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:49:54,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:49:54,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:49:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:54,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:49:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:49:54,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:49:54,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757659841] [2021-11-03 03:49:54,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:49:54,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455779783] [2021-11-03 03:49:54,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455779783] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:49:54,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:49:54,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2021-11-03 03:49:54,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338708789] [2021-11-03 03:49:54,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:49:54,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:49:54,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:49:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:49:54,623 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:49:54,655 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2021-11-03 03:49:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:49:54,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 03:49:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:49:54,657 INFO L225 Difference]: With dead ends: 14 [2021-11-03 03:49:54,657 INFO L226 Difference]: Without dead ends: 9 [2021-11-03 03:49:54,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:49:54,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-03 03:49:54,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-03 03:49:54,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-03 03:49:54,663 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2021-11-03 03:49:54,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:49:54,663 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-03 03:49:54,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-11-03 03:49:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 03:49:54,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:49:54,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:49:54,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:49:54,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:49:54,891 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:49:54,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:49:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash -740256525, now seen corresponding path program 1 times [2021-11-03 03:49:54,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:49:54,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938337548] [2021-11-03 03:49:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:49:54,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:49:54,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 03:49:54,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965552272] [2021-11-03 03:49:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:49:54,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:49:54,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:49:54,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:49:54,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 03:49:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:49:55,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:49:55,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:49:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:49:55,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:49:55,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:49:55,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938337548] [2021-11-03 03:49:55,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:49:55,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965552272] [2021-11-03 03:49:55,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger: modulus not positive [2021-11-03 03:49:55,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [954965479] [2021-11-03 03:49:55,951 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-03 03:49:55,951 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:49:55,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:49:55,951 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:49:55,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:49:55,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:55,961 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:49:55,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:55,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-03 03:49:55,962 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:49:55,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:55,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:49:55,965 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-03 03:49:55,969 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 10=[|v_#valid_14|]} [2021-11-03 03:49:55,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:55,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-03 03:49:55,980 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:55,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:49:55,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:55,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 03:49:55,982 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:49:55,986 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:49:55,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:55,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:49:55,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:55,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:49:55,988 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:49:55,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:55,996 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:55,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:56,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:56,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:56,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:49:56,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 03:49:56,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:49:56,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:49:56,011 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 03:49:56,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:56,016 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 03:49:56,019 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:49:56,019 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:204, output treesize:86 [2021-11-03 03:49:56,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-03 03:49:56,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-03 03:49:56,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:56,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:56,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:56,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,108 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:49:56,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,115 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-11-03 03:49:56,119 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:49:56,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-11-03 03:49:56,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-11-03 03:49:56,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,161 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:49:56,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 03:49:56,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 270 [2021-11-03 03:49:56,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-03 03:49:56,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-03 03:49:56,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-03 03:49:56,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:56,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:56,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:56,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,291 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:49:56,294 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-11-03 03:49:56,302 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:49:56,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:49:56,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-03 03:49:56,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-03 03:49:56,318 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:49:57,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [954965479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:49:57,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:49:57,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 03:49:57,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136411731] [2021-11-03 03:49:57,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:49:57,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:49:57,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:49:57,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:49:57,025 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:57,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:49:57,220 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-11-03 03:49:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:49:57,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 03:49:57,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:49:57,221 INFO L225 Difference]: With dead ends: 9 [2021-11-03 03:49:57,221 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 03:49:57,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:49:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 03:49:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 03:49:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 03:49:57,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-11-03 03:49:57,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:49:57,222 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 03:49:57,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:49:57,222 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 03:49:57,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 03:49:57,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:49:57,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:49:57,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:49:57,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 03:49:57,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:57,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:57,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:49:57,586 INFO L853 garLoopResultBuilder]: At program point L48-2(lines 48 51) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~d~0 4294967296)) (.cse1 (select |#memory_int| |#t~string0.base|))) (and (< (mod ULTIMATE.start_main_~s~0 4294967296) 31) (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (< .cse0 4294967295) (< 0 .cse0) (= (select .cse1 (+ |#t~string0.offset| 1)) 0) (= 2 (select |#length| |#t~string0.base|)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (= (select |#length| |#t~string1.base|) 12) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= 48 (select .cse1 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= |#t~string0.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-11-03 03:49:57,586 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 58) no Hoare annotation was computed. [2021-11-03 03:49:57,587 INFO L853 garLoopResultBuilder]: At program point L44-1(lines 44 58) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (< (mod ULTIMATE.start_main_~s~0 4294967296) 31) (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= 2 (select |#length| |#t~string0.base|)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (= (select |#length| |#t~string1.base|) 12) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= 48 (select .cse0 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= |#t~string0.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-11-03 03:49:57,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 03:49:57,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-11-03 03:49:57,587 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2021-11-03 03:49:57,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 03:49:57,587 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-11-03 03:49:57,587 INFO L853 garLoopResultBuilder]: At program point L46-2(lines 46 53) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~m~0) (< (mod ULTIMATE.start_main_~s~0 4294967296) 31) (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (< 0 (mod ULTIMATE.start_main_~d~0 4294967296)) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= 2 (select |#length| |#t~string0.base|)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (= (select |#length| |#t~string1.base|) 12) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= 48 (select .cse0 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= |#t~string0.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-11-03 03:49:57,591 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-03 03:49:57,592 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:49:57,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:49:57 BoogieIcfgContainer [2021-11-03 03:49:57,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:49:57,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:49:57,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:49:57,630 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:49:57,631 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:49:51" (3/4) ... [2021-11-03 03:49:57,633 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 03:49:57,642 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-03 03:49:57,642 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-03 03:49:57,642 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 03:49:57,642 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 03:49:57,663 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((s % 4294967296 < 31 && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond [2021-11-03 03:49:57,664 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((n == m && s % 4294967296 < 31) && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && 0 < d % 4294967296) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond [2021-11-03 03:49:57,664 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((s % 4294967296 < 31 && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && d % 4294967296 < 4294967295) && 0 < d % 4294967296) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond [2021-11-03 03:49:57,673 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 03:49:57,674 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:49:57,675 INFO L168 Benchmark]: Toolchain (without parser) took 6920.75 ms. Allocated memory was 88.1 MB in the beginning and 138.4 MB in the end (delta: 50.3 MB). Free memory was 54.0 MB in the beginning and 92.1 MB in the end (delta: -38.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-11-03 03:49:57,678 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory was 61.0 MB in the beginning and 60.9 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:49:57,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.83 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 53.8 MB in the beginning and 91.3 MB in the end (delta: -37.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:49:57,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.28 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:49:57,683 INFO L168 Benchmark]: Boogie Preprocessor took 21.82 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:49:57,684 INFO L168 Benchmark]: RCFGBuilder took 370.74 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 76.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:49:57,684 INFO L168 Benchmark]: TraceAbstraction took 6176.81 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 75.8 MB in the beginning and 95.2 MB in the end (delta: -19.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:49:57,686 INFO L168 Benchmark]: Witness Printer took 43.88 ms. Allocated memory is still 138.4 MB. Free memory was 95.2 MB in the beginning and 92.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:49:57,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory was 61.0 MB in the beginning and 60.9 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.83 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 53.8 MB in the beginning and 91.3 MB in the end (delta: -37.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.28 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.82 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 370.74 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 76.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6176.81 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 75.8 MB in the beginning and 95.2 MB in the end (delta: -19.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Witness Printer took 43.88 ms. Allocated memory is still 138.4 MB. Free memory was 95.2 MB in the beginning and 92.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 22 SDslu, 10 SDs, 0 SdLazy, 49 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 240 HoareAnnotationTreeSize, 3 FomulaSimplifications, 299 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 10 NumberOfNonLiveVariables, 139 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 633, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 15, TOOLS_POST_TIME[ms]: 395, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 15, TOOLS_QUANTIFIERELIM_TIME[ms]: 384, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 170, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 39, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 108, DOMAIN_ISSUBSETEQ_APPLICATIONS: 5, DOMAIN_ISSUBSETEQ_TIME[ms]: 12, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 44, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 262, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 262, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 5, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 10, DAG_COMPRESSION_PROCESSED_NODES: 70, DAG_COMPRESSION_RETAINED_NODES: 40, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((((((((((((((((s % 4294967296 < 31 && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && d % 4294967296 < 4294967295) && 0 < d % 4294967296) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((((((((((n == m && s % 4294967296 < 31) && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && 0 < d % 4294967296) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((((((((((((((s % 4294967296 < 31 && \valid["modulus-2.c"] == 1) && unknown-#StackHeapBarrier-unknown < "modulus-2.c") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && \old(cond) == 1) && unknown-#length-unknown["modulus-2.c"] == 12) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && 48 == unknown-#memory_int-unknown["0"]["0"]) && "modulus-2.c" == 0) && "0" == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && \old(cond) == cond RESULT: Ultimate proved your program to be correct! [2021-11-03 03:49:57,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407344d-1512-42a8-81de-7800058cb24b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE