java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/nla-digbench/fermat2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 21:09:59,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 21:09:59,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 21:09:59,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 21:09:59,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 21:09:59,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 21:09:59,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 21:09:59,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 21:09:59,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 21:09:59,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 21:09:59,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 21:09:59,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 21:09:59,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 21:09:59,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 21:09:59,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 21:09:59,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 21:09:59,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 21:09:59,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 21:09:59,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 21:09:59,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 21:09:59,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 21:09:59,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 21:09:59,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 21:09:59,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 21:09:59,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 21:09:59,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 21:09:59,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 21:09:59,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 21:09:59,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 21:09:59,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 21:09:59,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 21:09:59,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 21:09:59,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 21:09:59,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 21:09:59,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 21:09:59,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 21:09:59,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-03 21:09:59,310 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 21:09:59,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 21:09:59,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 21:09:59,311 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 21:09:59,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 21:09:59,311 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 21:09:59,311 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 21:09:59,312 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 21:09:59,312 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 21:09:59,312 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 21:09:59,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 21:09:59,313 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 21:09:59,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 21:09:59,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 21:09:59,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 21:09:59,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 21:09:59,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 21:09:59,314 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 21:09:59,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 21:09:59,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 21:09:59,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 21:09:59,315 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 21:09:59,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 21:09:59,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 21:09:59,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 21:09:59,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 21:09:59,316 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 21:09:59,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 21:09:59,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 21:09:59,317 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 21:09:59,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 21:09:59,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 21:09:59,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 21:09:59,361 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 21:09:59,361 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 21:09:59,362 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat2.c [2019-09-03 21:09:59,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023641af2/4dd23e71b1134922b620bad92218c65b/FLAG850eaf75b [2019-09-03 21:09:59,840 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 21:09:59,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat2.c [2019-09-03 21:09:59,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023641af2/4dd23e71b1134922b620bad92218c65b/FLAG850eaf75b [2019-09-03 21:10:00,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023641af2/4dd23e71b1134922b620bad92218c65b [2019-09-03 21:10:00,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 21:10:00,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 21:10:00,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 21:10:00,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 21:10:00,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 21:10:00,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:10:00" (1/1) ... [2019-09-03 21:10:00,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6c6cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:00, skipping insertion in model container [2019-09-03 21:10:00,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:10:00" (1/1) ... [2019-09-03 21:10:00,250 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 21:10:00,267 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 21:10:00,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:10:00,427 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 21:10:00,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:10:00,458 INFO L192 MainTranslator]: Completed translation [2019-09-03 21:10:00,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:00 WrapperNode [2019-09-03 21:10:00,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 21:10:00,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 21:10:00,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 21:10:00,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 21:10:00,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:00" (1/1) ... [2019-09-03 21:10:00,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:00" (1/1) ... [2019-09-03 21:10:00,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:00" (1/1) ... [2019-09-03 21:10:00,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:00" (1/1) ... [2019-09-03 21:10:00,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:00" (1/1) ... [2019-09-03 21:10:00,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:00" (1/1) ... [2019-09-03 21:10:00,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:00" (1/1) ... [2019-09-03 21:10:00,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 21:10:00,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 21:10:00,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 21:10:00,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 21:10:00,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 21:10:00,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 21:10:00,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 21:10:00,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 21:10:00,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 21:10:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 21:10:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-03 21:10:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 21:10:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 21:10:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 21:10:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 21:10:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 21:10:00,817 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 21:10:00,817 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 21:10:00,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:10:00 BoogieIcfgContainer [2019-09-03 21:10:00,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 21:10:00,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 21:10:00,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 21:10:00,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 21:10:00,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 09:10:00" (1/3) ... [2019-09-03 21:10:00,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7244efad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:10:00, skipping insertion in model container [2019-09-03 21:10:00,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:10:00" (2/3) ... [2019-09-03 21:10:00,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7244efad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:10:00, skipping insertion in model container [2019-09-03 21:10:00,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:10:00" (3/3) ... [2019-09-03 21:10:00,826 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat2.c [2019-09-03 21:10:00,835 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 21:10:00,842 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 21:10:00,858 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 21:10:00,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 21:10:00,884 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 21:10:00,884 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 21:10:00,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 21:10:00,885 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 21:10:00,885 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 21:10:00,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 21:10:00,885 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 21:10:00,900 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-03 21:10:00,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 21:10:00,908 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:10:00,909 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:10:00,911 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:10:00,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:10:00,915 INFO L82 PathProgramCache]: Analyzing trace with hash -858950785, now seen corresponding path program 1 times [2019-09-03 21:10:00,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:10:00,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:10:00,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:00,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:10:00,962 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:10:00,981 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:10:00,982 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:10:00,982 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 21:10:01,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:01,001 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:10:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:10:01,015 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-03 21:10:01,017 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-03 21:10:01,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:10:01,017 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 21:10:01,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:01,038 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:10:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:10:01,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2019-09-03 21:10:01,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:10:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:10:01,084 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:10:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:10:01,105 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-03 21:10:01,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-09-03 21:10:01,106 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:10:01,110 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 21:10:01,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 21:10:01,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 21:10:01,130 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-09-03 21:10:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:10:01,150 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-09-03 21:10:01,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 21:10:01,151 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-03 21:10:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:10:01,172 INFO L225 Difference]: With dead ends: 21 [2019-09-03 21:10:01,172 INFO L226 Difference]: Without dead ends: 16 [2019-09-03 21:10:01,177 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 21:10:01,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-03 21:10:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-03 21:10:01,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-03 21:10:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-03 21:10:01,267 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-09-03 21:10:01,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:10:01,267 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-03 21:10:01,268 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 21:10:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-03 21:10:01,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 21:10:01,268 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:10:01,269 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:10:01,269 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:10:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:10:01,272 INFO L82 PathProgramCache]: Analyzing trace with hash -871939661, now seen corresponding path program 1 times [2019-09-03 21:10:01,273 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:10:01,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:10:01,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:01,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:10:01,274 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:10:01,279 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:10:01,280 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:10:01,280 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 21:10:01,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:01,312 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:10:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:10:01,326 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-03 21:10:01,327 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-03 21:10:01,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:10:01,327 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 21:10:01,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:01,348 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:10:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:10:01,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-03 21:10:01,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:10:01,497 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26 [2019-09-03 21:10:01,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:10:06,838 WARN L838 $PredicateComparison]: unable to prove that (or (= |c___VERIFIER_assert_#in~cond| 1) (and (= |c___VERIFIER_assert_#in~cond| 0) (exists ((v_main_~u~0_BEFORE_CALL_1 Int) (v_main_~A~0_BEFORE_CALL_1 Int)) (let ((.cse0 (div (+ (* (- 1) v_main_~u~0_BEFORE_CALL_1) 1) (- 2)))) (and (= 0 (mod (+ v_main_~u~0_BEFORE_CALL_1 1) (- 2))) (= (mod v_main_~A~0_BEFORE_CALL_1 2) 1) (not (= (+ (+ (+ (- 1) (* v_main_~u~0_BEFORE_CALL_1 v_main_~u~0_BEFORE_CALL_1)) (- (* 2 v_main_~u~0_BEFORE_CALL_1))) 2) (+ (* 4 v_main_~A~0_BEFORE_CALL_1) (* (+ (* .cse0 .cse0) (- v_main_~A~0_BEFORE_CALL_1)) 4)))) (< (let ((.cse1 (+ .cse0 (- 1)))) (* .cse1 .cse1)) v_main_~A~0_BEFORE_CALL_1)))))) is different from false [2019-09-03 21:10:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:10:09,294 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:10:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:10:11,427 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-03 21:10:11,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-03 21:10:11,427 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:10:11,428 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 21:10:11,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 21:10:11,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2019-09-03 21:10:11,430 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-09-03 21:10:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:10:13,482 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-09-03 21:10:13,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 21:10:13,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-03 21:10:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:10:13,486 INFO L225 Difference]: With dead ends: 25 [2019-09-03 21:10:13,486 INFO L226 Difference]: Without dead ends: 25 [2019-09-03 21:10:13,487 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2019-09-03 21:10:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-03 21:10:13,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2019-09-03 21:10:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-03 21:10:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-09-03 21:10:13,499 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2019-09-03 21:10:13,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:10:13,500 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-09-03 21:10:13,501 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 21:10:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-09-03 21:10:13,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-03 21:10:13,502 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:10:13,503 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:10:13,503 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:10:13,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:10:13,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1067575333, now seen corresponding path program 1 times [2019-09-03 21:10:13,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:10:13,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:10:13,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:13,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:10:13,511 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:10:13,513 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:10:13,513 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:10:13,513 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 21:10:13,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:13,538 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:10:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:10:13,555 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2019-09-03 21:10:13,557 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [17], [32], [35], [37], [40], [42], [43], [44], [45], [47], [48], [49] [2019-09-03 21:10:13,594 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 21:10:13,595 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 21:10:13,680 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-03 21:10:14,851 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 21:10:14,857 INFO L272 AbstractInterpreter]: Visited 15 different actions 20 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 14. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 7 variables. [2019-09-03 21:10:14,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:10:14,861 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 21:10:14,861 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:10:14,861 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 21:10:14,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:10:14,884 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:10:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:10:14,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-03 21:10:14,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:10:15,017 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:10:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:10:15,058 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:10:15,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:10:15,178 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:10:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:10:15,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 21:10:15,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-03 21:10:15,216 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-03 21:10:15,217 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-03 21:10:15,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-03 21:10:15,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2019-09-03 21:10:15,221 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 13 states. [2019-09-03 21:10:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:10:15,442 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-09-03 21:10:15,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-03 21:10:15,443 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2019-09-03 21:10:15,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:10:15,443 INFO L225 Difference]: With dead ends: 20 [2019-09-03 21:10:15,444 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 21:10:15,446 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=160, Unknown=1, NotChecked=0, Total=210 [2019-09-03 21:10:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 21:10:15,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 21:10:15,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 21:10:15,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 21:10:15,447 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-03 21:10:15,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:10:15,447 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 21:10:15,447 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-03 21:10:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 21:10:15,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 21:10:15,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 09:10:15 BoogieIcfgContainer [2019-09-03 21:10:15,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 21:10:15,456 INFO L168 Benchmark]: Toolchain (without parser) took 15220.86 ms. Allocated memory was 141.0 MB in the beginning and 256.4 MB in the end (delta: 115.3 MB). Free memory was 88.6 MB in the beginning and 99.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 104.6 MB. Max. memory is 7.1 GB. [2019-09-03 21:10:15,458 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 21:10:15,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.76 ms. Allocated memory is still 141.0 MB. Free memory was 88.4 MB in the beginning and 78.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-03 21:10:15,463 INFO L168 Benchmark]: Boogie Preprocessor took 119.57 ms. Allocated memory was 141.0 MB in the beginning and 200.8 MB in the end (delta: 59.8 MB). Free memory was 78.7 MB in the beginning and 178.3 MB in the end (delta: -99.6 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-03 21:10:15,464 INFO L168 Benchmark]: RCFGBuilder took 239.78 ms. Allocated memory is still 200.8 MB. Free memory was 177.7 MB in the beginning and 166.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-09-03 21:10:15,465 INFO L168 Benchmark]: TraceAbstraction took 14633.91 ms. Allocated memory was 200.8 MB in the beginning and 256.4 MB in the end (delta: 55.6 MB). Free memory was 166.6 MB in the beginning and 99.3 MB in the end (delta: 67.3 MB). Peak memory consumption was 122.9 MB. Max. memory is 7.1 GB. [2019-09-03 21:10:15,475 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 223.76 ms. Allocated memory is still 141.0 MB. Free memory was 88.4 MB in the beginning and 78.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.57 ms. Allocated memory was 141.0 MB in the beginning and 200.8 MB in the end (delta: 59.8 MB). Free memory was 78.7 MB in the beginning and 178.3 MB in the end (delta: -99.6 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 239.78 ms. Allocated memory is still 200.8 MB. Free memory was 177.7 MB in the beginning and 166.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14633.91 ms. Allocated memory was 200.8 MB in the beginning and 256.4 MB in the end (delta: 55.6 MB). Free memory was 166.6 MB in the beginning and 99.3 MB in the end (delta: 67.3 MB). Peak memory consumption was 122.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 14.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 46 SDtfs, 18 SDslu, 101 SDs, 0 SdLazy, 68 SolverSat, 8 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 66 ConstructedInterpolants, 5 QuantifiedInterpolants, 5406 SizeOfPredicates, 11 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...