./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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/modulus_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan --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 Taipan --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 0.1.23-635dfa2 [2018-12-09 11:51:02,466 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:51:02,467 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:51:02,473 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:51:02,473 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:51:02,474 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:51:02,475 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:51:02,475 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:51:02,476 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:51:02,477 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:51:02,477 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:51:02,477 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:51:02,478 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:51:02,478 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:51:02,479 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:51:02,479 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:51:02,479 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:51:02,480 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:51:02,481 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:51:02,482 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:51:02,482 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:51:02,483 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:51:02,484 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:51:02,484 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:51:02,484 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:51:02,485 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:51:02,485 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:51:02,486 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:51:02,486 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:51:02,487 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:51:02,487 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:51:02,487 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:51:02,487 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:51:02,487 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:51:02,488 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:51:02,488 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:51:02,488 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 11:51:02,495 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:51:02,496 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:51:02,496 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 11:51:02,496 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 11:51:02,496 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 11:51:02,496 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 11:51:02,496 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 11:51:02,497 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 11:51:02,497 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 11:51:02,497 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 11:51:02,497 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 11:51:02,497 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 11:51:02,497 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 11:51:02,497 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:51:02,497 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 11:51:02,498 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 11:51:02,498 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 11:51:02,498 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:51:02,498 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 11:51:02,498 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 11:51:02,498 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 11:51:02,498 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 11:51:02,498 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:51:02,498 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 11:51:02,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:51:02,498 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 11:51:02,499 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 11:51:02,499 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 11:51:02,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:51:02,499 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:51:02,499 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 11:51:02,499 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 11:51:02,499 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 11:51:02,499 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 11:51:02,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 11:51:02,499 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 11:51:02,499 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan 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 -> 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 -> c028dc478ad08c52f1db2e76a15a3094442b18a8 [2018-12-09 11:51:02,521 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:51:02,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:51:02,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:51:02,535 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:51:02,535 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:51:02,535 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/modulus_true-unreach-call_true-no-overflow.i [2018-12-09 11:51:02,579 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/data/693a475da/9a8377f5ea5949188268abd308a36236/FLAGef9825a74 [2018-12-09 11:51:02,982 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:51:02,982 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/sv-benchmarks/c/bitvector/modulus_true-unreach-call_true-no-overflow.i [2018-12-09 11:51:02,986 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/data/693a475da/9a8377f5ea5949188268abd308a36236/FLAGef9825a74 [2018-12-09 11:51:02,994 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/data/693a475da/9a8377f5ea5949188268abd308a36236 [2018-12-09 11:51:02,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:51:02,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:51:02,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:51:02,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:51:02,999 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:51:03,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:51:02" (1/1) ... [2018-12-09 11:51:03,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c56171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03, skipping insertion in model container [2018-12-09 11:51:03,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:51:02" (1/1) ... [2018-12-09 11:51:03,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:51:03,015 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:51:03,104 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:51:03,107 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:51:03,118 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:51:03,127 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:51:03,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03 WrapperNode [2018-12-09 11:51:03,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:51:03,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:51:03,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:51:03,128 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:51:03,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03" (1/1) ... [2018-12-09 11:51:03,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03" (1/1) ... [2018-12-09 11:51:03,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:51:03,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:51:03,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:51:03,141 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:51:03,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03" (1/1) ... [2018-12-09 11:51:03,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03" (1/1) ... [2018-12-09 11:51:03,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03" (1/1) ... [2018-12-09 11:51:03,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03" (1/1) ... [2018-12-09 11:51:03,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03" (1/1) ... [2018-12-09 11:51:03,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03" (1/1) ... [2018-12-09 11:51:03,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03" (1/1) ... [2018-12-09 11:51:03,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:51:03,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:51:03,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:51:03,188 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:51:03,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/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 [2018-12-09 11:51:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 11:51:03,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 11:51:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:51:03,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:51:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 11:51:03,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 11:51:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 11:51:03,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 11:51:03,304 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:51:03,304 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 11:51:03,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:51:03 BoogieIcfgContainer [2018-12-09 11:51:03,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:51:03,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 11:51:03,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 11:51:03,307 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 11:51:03,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:51:02" (1/3) ... [2018-12-09 11:51:03,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f83dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:51:03, skipping insertion in model container [2018-12-09 11:51:03,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:51:03" (2/3) ... [2018-12-09 11:51:03,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f83dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:51:03, skipping insertion in model container [2018-12-09 11:51:03,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:51:03" (3/3) ... [2018-12-09 11:51:03,309 INFO L112 eAbstractionObserver]: Analyzing ICFG modulus_true-unreach-call_true-no-overflow.i [2018-12-09 11:51:03,317 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 11:51:03,322 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 11:51:03,332 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 11:51:03,349 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 11:51:03,349 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 11:51:03,349 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 11:51:03,349 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 11:51:03,349 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 11:51:03,349 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 11:51:03,349 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 11:51:03,349 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 11:51:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-12-09 11:51:03,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 11:51:03,362 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:51:03,362 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:51:03,363 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:51:03,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:51:03,366 INFO L82 PathProgramCache]: Analyzing trace with hash -990388171, now seen corresponding path program 1 times [2018-12-09 11:51:03,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:51:03,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:51:03,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:03,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:51:03,398 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:51:03,418 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 11:51:03,418 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 11:51:03,418 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/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 [2018-12-09 11:51:03,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:03,426 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 11:51:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:03,451 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 11:51:03,452 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:51:03,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:51:03,452 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:51:03,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:03,459 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:51:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:03,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:51:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:51:03,650 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:51:03,791 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 10 [2018-12-09 11:51:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:51:03,831 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:51:03,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2018-12-09 11:51:03,831 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:51:03,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 11:51:03,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 11:51:03,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-12-09 11:51:03,843 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2018-12-09 11:51:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:51:03,902 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2018-12-09 11:51:03,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 11:51:03,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-12-09 11:51:03,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:51:03,911 INFO L225 Difference]: With dead ends: 52 [2018-12-09 11:51:03,911 INFO L226 Difference]: Without dead ends: 18 [2018-12-09 11:51:03,913 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-12-09 11:51:03,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-09 11:51:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-12-09 11:51:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-09 11:51:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-12-09 11:51:03,934 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2018-12-09 11:51:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:51:03,934 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-12-09 11:51:03,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 11:51:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2018-12-09 11:51:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 11:51:03,934 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:51:03,934 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:51:03,935 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:51:03,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:51:03,935 INFO L82 PathProgramCache]: Analyzing trace with hash -988541129, now seen corresponding path program 1 times [2018-12-09 11:51:03,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:51:03,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:51:03,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:03,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:51:03,936 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:51:03,939 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 11:51:03,940 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 11:51:03,940 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/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 [2018-12-09 11:51:03,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:03,946 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 11:51:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:03,964 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-09 11:51:03,964 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 11:51:03,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:51:03,965 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:51:03,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:03,971 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:51:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:03,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:51:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:51:04,042 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:51:06,151 WARN L180 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 40 DAG size of output: 10 [2018-12-09 11:51:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:51:06,218 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:51:06,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2018-12-09 11:51:06,218 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:51:06,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 11:51:06,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 11:51:06,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-12-09 11:51:06,219 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 7 states. [2018-12-09 11:51:06,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:51:06,248 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-12-09 11:51:06,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:51:06,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-12-09 11:51:06,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:51:06,248 INFO L225 Difference]: With dead ends: 22 [2018-12-09 11:51:06,249 INFO L226 Difference]: Without dead ends: 16 [2018-12-09 11:51:06,249 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-12-09 11:51:06,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-09 11:51:06,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-09 11:51:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-09 11:51:06,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-12-09 11:51:06,251 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2018-12-09 11:51:06,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:51:06,252 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-12-09 11:51:06,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 11:51:06,252 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-12-09 11:51:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 11:51:06,252 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:51:06,252 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:51:06,252 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:51:06,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:51:06,253 INFO L82 PathProgramCache]: Analyzing trace with hash 370514993, now seen corresponding path program 1 times [2018-12-09 11:51:06,253 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:51:06,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:51:06,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:06,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:51:06,254 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:51:06,260 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 11:51:06,260 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 11:51:06,260 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/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 [2018-12-09 11:51:06,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:06,266 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 11:51:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:06,284 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-12-09 11:51:06,285 INFO L205 CegarAbsIntRunner]: [0], [4], [7], [14], [16], [23], [29], [35], [45], [48], [50], [56], [57], [58], [60] [2018-12-09 11:51:06,305 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 11:51:06,305 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 11:51:06,394 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 11:51:06,395 INFO L272 AbstractInterpreter]: Visited 15 different actions 15 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 13. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-12-09 11:51:06,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:51:06,401 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 11:51:06,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:51:06,401 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:51:06,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:06,407 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:51:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:06,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:51:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:51:06,421 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:51:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:51:06,448 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:51:06,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2018-12-09 11:51:06,449 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:51:06,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:51:06,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:51:06,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:51:06,449 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2018-12-09 11:51:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:51:06,468 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2018-12-09 11:51:06,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:51:06,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-12-09 11:51:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:51:06,469 INFO L225 Difference]: With dead ends: 26 [2018-12-09 11:51:06,469 INFO L226 Difference]: Without dead ends: 17 [2018-12-09 11:51:06,469 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:51:06,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-09 11:51:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-09 11:51:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-09 11:51:06,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-12-09 11:51:06,472 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2018-12-09 11:51:06,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:51:06,472 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-12-09 11:51:06,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:51:06,473 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-12-09 11:51:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 11:51:06,473 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:51:06,473 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:51:06,473 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:51:06,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:51:06,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1512958244, now seen corresponding path program 1 times [2018-12-09 11:51:06,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:51:06,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:51:06,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:06,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:51:06,474 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:51:06,481 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 11:51:06,481 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 11:51:06,481 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 11:51:06,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:06,488 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 11:51:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:06,508 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-12-09 11:51:06,508 INFO L205 CegarAbsIntRunner]: [0], [4], [7], [14], [16], [23], [25], [29], [35], [45], [48], [50], [56], [57], [58], [60] [2018-12-09 11:51:06,509 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 11:51:06,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 11:51:06,531 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 11:51:06,532 INFO L272 AbstractInterpreter]: Visited 16 different actions 19 times. Merged at 2 different actions 2 times. Never widened. Performed 44 root evaluator evaluations with a maximum evaluation depth of 13. Performed 44 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Found 3 fixpoints after 2 different actions. Largest state had 6 variables. [2018-12-09 11:51:06,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:51:06,537 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 11:51:06,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:51:06,538 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:51:06,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:06,546 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:51:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:06,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:51:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 11:51:06,657 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:51:10,900 WARN L180 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 40 DAG size of output: 10 [2018-12-09 11:51:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 11:51:11,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 11:51:11,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-12-09 11:51:11,990 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:51:11,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 11:51:11,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 11:51:11,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=98, Unknown=2, NotChecked=0, Total=132 [2018-12-09 11:51:11,991 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 7 states. [2018-12-09 11:51:12,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:51:12,020 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-12-09 11:51:12,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 11:51:12,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-12-09 11:51:12,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:51:12,021 INFO L225 Difference]: With dead ends: 22 [2018-12-09 11:51:12,021 INFO L226 Difference]: Without dead ends: 17 [2018-12-09 11:51:12,021 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=38, Invalid=116, Unknown=2, NotChecked=0, Total=156 [2018-12-09 11:51:12,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-09 11:51:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-09 11:51:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-09 11:51:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-12-09 11:51:12,023 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 16 [2018-12-09 11:51:12,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:51:12,024 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-12-09 11:51:12,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 11:51:12,024 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-12-09 11:51:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 11:51:12,024 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:51:12,024 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 11:51:12,024 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:51:12,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:51:12,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1514805286, now seen corresponding path program 1 times [2018-12-09 11:51:12,025 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 11:51:12,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:51:12,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:12,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:51:12,025 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 11:51:12,030 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-09 11:51:12,030 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-09 11:51:12,030 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-09 11:51:12,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:12,039 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-09 11:51:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:12,061 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-12-09 11:51:12,061 INFO L205 CegarAbsIntRunner]: [0], [4], [7], [14], [16], [23], [25], [29], [37], [45], [48], [50], [56], [57], [58], [60] [2018-12-09 11:51:12,062 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 11:51:12,062 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 11:51:12,086 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 11:51:12,087 INFO L272 AbstractInterpreter]: Visited 16 different actions 19 times. Merged at 2 different actions 2 times. Never widened. Performed 42 root evaluator evaluations with a maximum evaluation depth of 13. Performed 42 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Found 3 fixpoints after 2 different actions. Largest state had 6 variables. [2018-12-09 11:51:12,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:51:12,088 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 11:51:12,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 11:51:12,089 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 11:51:12,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:51:12,095 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 11:51:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:51:13,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:51:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 11:51:13,636 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 11:51:17,412 WARN L180 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 40 DAG size of output: 10 [2018-12-09 11:51:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 11:51:17,465 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:51:17,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2018-12-09 11:51:17,465 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 11:51:17,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 11:51:17,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 11:51:17,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=116, Unknown=1, NotChecked=0, Total=156 [2018-12-09 11:51:17,466 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2018-12-09 11:51:17,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:51:17,482 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-12-09 11:51:17,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 11:51:17,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-12-09 11:51:17,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:51:17,483 INFO L225 Difference]: With dead ends: 17 [2018-12-09 11:51:17,483 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 11:51:17,483 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2018-12-09 11:51:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 11:51:17,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 11:51:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 11:51:17,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 11:51:17,484 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-12-09 11:51:17,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:51:17,484 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 11:51:17,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 11:51:17,484 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 11:51:17,484 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 11:51:17,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 11:51:17,513 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 11:51:17,513 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 11:51:17,513 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 11:51:17,513 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 11:51:17,513 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 11:51:17,513 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 11:51:17,513 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 22 46) no Hoare annotation was computed. [2018-12-09 11:51:17,513 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 22 46) no Hoare annotation was computed. [2018-12-09 11:51:17,513 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)))) [2018-12-09 11:51:17,513 INFO L444 ceAbstractionStarter]: At program point L34-2(lines 34 37) the Hoare annotation is: (< 0 (mod main_~d~0 4294967296)) [2018-12-09 11:51:17,514 INFO L448 ceAbstractionStarter]: For program point L34-3(lines 34 37) no Hoare annotation was computed. [2018-12-09 11:51:17,514 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 44) no Hoare annotation was computed. [2018-12-09 11:51:17,514 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)) [2018-12-09 11:51:17,514 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 22 46) the Hoare annotation is: true [2018-12-09 11:51:17,514 INFO L448 ceAbstractionStarter]: For program point L32-3(lines 30 44) no Hoare annotation was computed. [2018-12-09 11:51:17,514 INFO L448 ceAbstractionStarter]: For program point L30-1(lines 30 44) no Hoare annotation was computed. [2018-12-09 11:51:17,514 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2018-12-09 11:51:17,514 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2018-12-09 11:51:17,514 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2018-12-09 11:51:17,514 INFO L448 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-12-09 11:51:17,514 INFO L448 ceAbstractionStarter]: For program point L6(lines 6 8) no Hoare annotation was computed. [2018-12-09 11:51:17,514 INFO L448 ceAbstractionStarter]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2018-12-09 11:51:17,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:51:17 BoogieIcfgContainer [2018-12-09 11:51:17,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 11:51:17,521 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 11:51:17,521 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 11:51:17,521 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 11:51:17,522 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:51:03" (3/4) ... [2018-12-09 11:51:17,524 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 11:51:17,527 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 11:51:17,527 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 11:51:17,527 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 11:51:17,529 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 11:51:17,529 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-09 11:51:17,529 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 11:51:17,554 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a1471dfd-e3b4-4123-becf-40ebee8829bf/bin-2019/utaipan/witness.graphml [2018-12-09 11:51:17,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 11:51:17,555 INFO L168 Benchmark]: Toolchain (without parser) took 14558.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -126.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:51:17,555 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:51:17,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.44 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:51:17,556 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.19 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:51:17,556 INFO L168 Benchmark]: Boogie Preprocessor took 46.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-09 11:51:17,556 INFO L168 Benchmark]: RCFGBuilder took 116.65 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: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2018-12-09 11:51:17,556 INFO L168 Benchmark]: TraceAbstraction took 14215.90 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:51:17,557 INFO L168 Benchmark]: Witness Printer took 33.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:51:17,558 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 130.44 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 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 13.19 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 116.65 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: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 14215.90 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Witness Printer took 33.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. 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, 14.1s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 30 SDslu, 205 SDs, 0 SdLazy, 148 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 11.5s 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, 0.1s AbstIntTime, 3 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, 11.8s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 132 ConstructedInterpolants, 5 QuantifiedInterpolants, 8976 SizeOfPredicates, 21 NumberOfNonLiveVariables, 174 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 9/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...