./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/modulus_true-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/modulus_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c028dc478ad08c52f1db2e76a15a3094442b18a8 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 21:49:51,417 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 21:49:51,419 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 21:49:51,427 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 21:49:51,427 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 21:49:51,428 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 21:49:51,429 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 21:49:51,430 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 21:49:51,431 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 21:49:51,432 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 21:49:51,433 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 21:49:51,433 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 21:49:51,434 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 21:49:51,434 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 21:49:51,435 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 21:49:51,436 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 21:49:51,436 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 21:49:51,438 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 21:49:51,439 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 21:49:51,440 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 21:49:51,441 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 21:49:51,442 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 21:49:51,443 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 21:49:51,444 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 21:49:51,444 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 21:49:51,444 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 21:49:51,445 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 21:49:51,446 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 21:49:51,446 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 21:49:51,447 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 21:49:51,447 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 21:49:51,448 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 21:49:51,448 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 21:49:51,448 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 21:49:51,448 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 21:49:51,449 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 21:49:51,449 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-22 21:49:51,459 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 21:49:51,459 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 21:49:51,459 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 21:49:51,460 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 21:49:51,460 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 21:49:51,460 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 21:49:51,460 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 21:49:51,461 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 21:49:51,461 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 21:49:51,461 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 21:49:51,461 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 21:49:51,461 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 21:49:51,461 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 21:49:51,461 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 21:49:51,461 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 21:49:51,462 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 21:49:51,462 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 21:49:51,462 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 21:49:51,462 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 21:49:51,462 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 21:49:51,462 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 21:49:51,462 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 21:49:51,462 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 21:49:51,463 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 21:49:51,463 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 21:49:51,463 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 21:49:51,463 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 21:49:51,463 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 21:49:51,463 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 21:49:51,463 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 21:49:51,464 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c028dc478ad08c52f1db2e76a15a3094442b18a8 [2018-11-22 21:49:51,486 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 21:49:51,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 21:49:51,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 21:49:51,499 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 21:49:51,499 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 21:49:51,500 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/modulus_true-unreach-call_true-no-overflow.i [2018-11-22 21:49:51,538 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer/data/466572645/fa7100346eb14888bed89eeb154edd71/FLAG4a1a5b868 [2018-11-22 21:49:51,941 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 21:49:51,942 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/sv-benchmarks/c/bitvector/modulus_true-unreach-call_true-no-overflow.i [2018-11-22 21:49:51,947 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer/data/466572645/fa7100346eb14888bed89eeb154edd71/FLAG4a1a5b868 [2018-11-22 21:49:51,958 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer/data/466572645/fa7100346eb14888bed89eeb154edd71 [2018-11-22 21:49:51,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 21:49:51,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 21:49:51,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 21:49:51,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 21:49:51,964 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 21:49:51,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:49:51" (1/1) ... [2018-11-22 21:49:51,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5db597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:51, skipping insertion in model container [2018-11-22 21:49:51,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:49:51" (1/1) ... [2018-11-22 21:49:51,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 21:49:51,988 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 21:49:52,108 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:49:52,110 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 21:49:52,121 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:49:52,131 INFO L195 MainTranslator]: Completed translation [2018-11-22 21:49:52,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52 WrapperNode [2018-11-22 21:49:52,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 21:49:52,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 21:49:52,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 21:49:52,132 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 21:49:52,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2018-11-22 21:49:52,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2018-11-22 21:49:52,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 21:49:52,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 21:49:52,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 21:49:52,145 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 21:49:52,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2018-11-22 21:49:52,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2018-11-22 21:49:52,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2018-11-22 21:49:52,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2018-11-22 21:49:52,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2018-11-22 21:49:52,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2018-11-22 21:49:52,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2018-11-22 21:49:52,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 21:49:52,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 21:49:52,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 21:49:52,196 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 21:49:52,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/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 [2018-11-22 21:49:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 21:49:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 21:49:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 21:49:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 21:49:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 21:49:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 21:49:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-22 21:49:52,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-22 21:49:52,341 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 21:49:52,342 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-22 21:49:52,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:49:52 BoogieIcfgContainer [2018-11-22 21:49:52,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 21:49:52,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 21:49:52,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 21:49:52,346 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 21:49:52,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:49:51" (1/3) ... [2018-11-22 21:49:52,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d32d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:49:52, skipping insertion in model container [2018-11-22 21:49:52,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (2/3) ... [2018-11-22 21:49:52,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d32d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:49:52, skipping insertion in model container [2018-11-22 21:49:52,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:49:52" (3/3) ... [2018-11-22 21:49:52,349 INFO L112 eAbstractionObserver]: Analyzing ICFG modulus_true-unreach-call_true-no-overflow.i [2018-11-22 21:49:52,356 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 21:49:52,362 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 21:49:52,372 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 21:49:52,389 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 21:49:52,389 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 21:49:52,389 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 21:49:52,389 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 21:49:52,389 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 21:49:52,390 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 21:49:52,390 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 21:49:52,390 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 21:49:52,390 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 21:49:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-22 21:49:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-22 21:49:52,403 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:49:52,404 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:49:52,405 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:49:52,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:49:52,409 INFO L82 PathProgramCache]: Analyzing trace with hash -990388171, now seen corresponding path program 1 times [2018-11-22 21:49:52,410 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:49:52,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:49:52,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:49:52,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:49:52,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:49:52,473 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 21:49:52,474 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 21:49:52,474 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/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 [2018-11-22 21:49:52,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:49:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:49:52,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:49:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:49:52,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:49:52,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-22 21:49:52,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 21:49:52,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 21:49:52,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-22 21:49:52,791 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2018-11-22 21:49:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:49:52,881 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2018-11-22 21:49:52,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 21:49:52,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-22 21:49:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:49:52,888 INFO L225 Difference]: With dead ends: 52 [2018-11-22 21:49:52,888 INFO L226 Difference]: Without dead ends: 18 [2018-11-22 21:49:52,891 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-22 21:49:52,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-22 21:49:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-22 21:49:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-22 21:49:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-11-22 21:49:52,916 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2018-11-22 21:49:52,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:49:52,916 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-22 21:49:52,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 21:49:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2018-11-22 21:49:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-22 21:49:52,917 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:49:52,917 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:49:52,917 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:49:52,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:49:52,918 INFO L82 PathProgramCache]: Analyzing trace with hash -988541129, now seen corresponding path program 1 times [2018-11-22 21:49:52,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:49:52,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:49:52,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:49:52,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:49:52,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:49:52,924 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 21:49:52,924 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 21:49:52,925 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/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 [2018-11-22 21:49:52,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:49:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:49:52,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:49:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:49:53,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:49:53,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-22 21:49:53,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 21:49:53,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 21:49:53,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-22 21:49:53,066 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 7 states. [2018-11-22 21:49:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:49:53,114 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-11-22 21:49:53,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 21:49:53,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-11-22 21:49:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:49:53,115 INFO L225 Difference]: With dead ends: 22 [2018-11-22 21:49:53,115 INFO L226 Difference]: Without dead ends: 16 [2018-11-22 21:49:53,116 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-22 21:49:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-22 21:49:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-22 21:49:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-22 21:49:53,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-11-22 21:49:53,119 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2018-11-22 21:49:53,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:49:53,119 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-11-22 21:49:53,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 21:49:53,120 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-22 21:49:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-22 21:49:53,121 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:49:53,122 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:49:53,122 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:49:53,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:49:53,123 INFO L82 PathProgramCache]: Analyzing trace with hash 370514993, now seen corresponding path program 1 times [2018-11-22 21:49:53,123 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:49:53,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:49:53,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:49:53,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:49:53,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:49:53,135 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 21:49:53,135 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 21:49:53,135 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/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 [2018-11-22 21:49:53,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:49:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:49:53,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:49:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:49:53,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:49:53,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-22 21:49:53,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-22 21:49:53,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-22 21:49:53,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-22 21:49:53,198 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2018-11-22 21:49:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:49:53,221 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2018-11-22 21:49:53,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 21:49:53,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-22 21:49:53,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:49:53,222 INFO L225 Difference]: With dead ends: 26 [2018-11-22 21:49:53,222 INFO L226 Difference]: Without dead ends: 17 [2018-11-22 21:49:53,222 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-22 21:49:53,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-22 21:49:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-22 21:49:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-22 21:49:53,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-22 21:49:53,225 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2018-11-22 21:49:53,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:49:53,226 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-22 21:49:53,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-22 21:49:53,226 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-22 21:49:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-22 21:49:53,226 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:49:53,227 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:49:53,227 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:49:53,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:49:53,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1512958244, now seen corresponding path program 1 times [2018-11-22 21:49:53,227 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:49:53,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:49:53,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:49:53,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:49:53,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:49:53,236 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 21:49:53,236 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 21:49:53,237 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/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 [2018-11-22 21:49:53,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:49:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:49:53,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:49:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 21:49:53,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:49:53,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-22 21:49:53,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 21:49:53,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 21:49:53,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-22 21:49:53,445 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 7 states. [2018-11-22 21:49:53,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:49:53,486 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-22 21:49:53,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 21:49:53,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-11-22 21:49:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:49:53,487 INFO L225 Difference]: With dead ends: 22 [2018-11-22 21:49:53,487 INFO L226 Difference]: Without dead ends: 17 [2018-11-22 21:49:53,488 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-22 21:49:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-22 21:49:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-22 21:49:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-22 21:49:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-22 21:49:53,491 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 16 [2018-11-22 21:49:53,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:49:53,491 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-22 21:49:53,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 21:49:53,492 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-22 21:49:53,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-22 21:49:53,493 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:49:53,493 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:49:53,494 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:49:53,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:49:53,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1514805286, now seen corresponding path program 1 times [2018-11-22 21:49:53,494 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:49:53,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:49:53,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:49:53,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:49:53,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:49:53,503 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 21:49:53,503 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 21:49:53,503 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/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 [2018-11-22 21:49:53,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:49:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:49:55,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:49:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 21:49:55,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:49:55,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-22 21:49:55,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-22 21:49:55,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-22 21:49:55,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-22 21:49:55,208 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2018-11-22 21:49:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:49:55,238 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-11-22 21:49:55,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-22 21:49:55,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-11-22 21:49:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:49:55,239 INFO L225 Difference]: With dead ends: 17 [2018-11-22 21:49:55,239 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 21:49:55,239 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-22 21:49:55,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 21:49:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 21:49:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 21:49:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 21:49:55,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-11-22 21:49:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:49:55,241 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:49:55,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-22 21:49:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 21:49:55,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 21:49:55,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 21:49:55,296 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-22 21:49:55,297 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 21:49:55,297 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 21:49:55,297 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 21:49:55,297 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 21:49:55,297 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 21:49:55,297 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 22 46) no Hoare annotation was computed. [2018-11-22 21:49:55,297 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 22 46) no Hoare annotation was computed. [2018-11-22 21:49:55,298 INFO L444 ceAbstractionStarter]: At program point L40-1(lines 40 42) the Hoare annotation is: (let ((.cse0 (mod main_~n~0 4294967296)) (.cse1 (mod main_~d~0 4294967296))) (or (and (<= .cse0 .cse1) (not (= .cse1 (mod main_~m~0 4294967296))) (= main_~n~0 main_~m~0)) (and (= main_~m~0 0) (= .cse1 .cse0) (< 0 .cse1)))) [2018-11-22 21:49:55,298 INFO L444 ceAbstractionStarter]: At program point L34-2(lines 34 37) the Hoare annotation is: (< 0 (mod main_~d~0 4294967296)) [2018-11-22 21:49:55,298 INFO L448 ceAbstractionStarter]: For program point L34-3(lines 34 37) no Hoare annotation was computed. [2018-11-22 21:49:55,298 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 44) no Hoare annotation was computed. [2018-11-22 21:49:55,299 INFO L444 ceAbstractionStarter]: At program point L32-2(lines 32 39) the Hoare annotation is: (and (< 0 (mod main_~d~0 4294967296)) (= main_~n~0 main_~m~0)) [2018-11-22 21:49:55,299 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 22 46) the Hoare annotation is: true [2018-11-22 21:49:55,299 INFO L448 ceAbstractionStarter]: For program point L32-3(lines 30 44) no Hoare annotation was computed. [2018-11-22 21:49:55,299 INFO L448 ceAbstractionStarter]: For program point L30-1(lines 30 44) no Hoare annotation was computed. [2018-11-22 21:49:55,299 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2018-11-22 21:49:55,299 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2018-11-22 21:49:55,300 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2018-11-22 21:49:55,300 INFO L448 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-11-22 21:49:55,300 INFO L448 ceAbstractionStarter]: For program point L6(lines 6 8) no Hoare annotation was computed. [2018-11-22 21:49:55,300 INFO L448 ceAbstractionStarter]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2018-11-22 21:49:55,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:49:55 BoogieIcfgContainer [2018-11-22 21:49:55,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 21:49:55,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 21:49:55,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 21:49:55,311 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 21:49:55,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:49:52" (3/4) ... [2018-11-22 21:49:55,315 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 21:49:55,323 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 21:49:55,323 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 21:49:55,323 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-22 21:49:55,328 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-22 21:49:55,328 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-22 21:49:55,328 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 21:49:55,365 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cff2225d-9436-462d-9652-3705d73f4b98/bin-2019/uautomizer/witness.graphml [2018-11-22 21:49:55,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 21:49:55,366 INFO L168 Benchmark]: Toolchain (without parser) took 3405.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 955.4 MB in the beginning and 933.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 140.3 MB. Max. memory is 11.5 GB. [2018-11-22 21:49:55,367 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:49:55,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.87 ms. Allocated memory is still 1.0 GB. Free memory was 955.4 MB in the beginning and 944.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:49:55,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.39 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 939.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-22 21:49:55,369 INFO L168 Benchmark]: Boogie Preprocessor took 50.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-22 21:49:55,369 INFO L168 Benchmark]: RCFGBuilder took 146.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-11-22 21:49:55,369 INFO L168 Benchmark]: TraceAbstraction took 2967.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 940.4 MB in the end (delta: 157.8 MB). Peak memory consumption was 157.8 MB. Max. memory is 11.5 GB. [2018-11-22 21:49:55,370 INFO L168 Benchmark]: Witness Printer took 54.91 ms. Allocated memory is still 1.1 GB. Free memory was 940.4 MB in the beginning and 933.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-22 21:49:55,372 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.87 ms. Allocated memory is still 1.0 GB. Free memory was 955.4 MB in the beginning and 944.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.39 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 939.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 146.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2967.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 940.4 MB in the end (delta: 157.8 MB). Peak memory consumption was 157.8 MB. Max. memory is 11.5 GB. * Witness Printer took 54.91 ms. Allocated memory is still 1.1 GB. Free memory was 940.4 MB in the beginning and 933.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 < d % 4294967296 && n == m - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 < d % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 30 SDslu, 208 SDs, 0 SdLazy, 145 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 55 HoareAnnotationTreeSize, 13 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 66 ConstructedInterpolants, 1 QuantifiedInterpolants, 3686 SizeOfPredicates, 14 NumberOfNonLiveVariables, 174 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 5/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...